If you are tired of razor burn, missed patches, and uncomfortable shaving routines, it might be time to upgrade to a Philips Norelco shaver. As the number one electric shaver brand in America, Philips Norelco offers a wide range of models designed for different hair types, skin sensitivities, and budgets. Whether you need a quick daily shave or a luxurious grooming experience, this guide will help you find the best Philips Norelco shaver for your needs in 2026. We have evaluated six top models, from the versatile Head Shaver Pro 9000 to the premium i9000 Prestige, and we break down the key features that matter most.

For a broader look at the brand’s lineup, check out our full guide to top philips shavers for every need. Now, let’s dive into the top picks.

1
Best Seller

Philips Norelco Head Shaver Pro 9000 Electric Head

Norelco
9.7 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
The Philips Norelco Head Shaver Pro 9000 delivers a close, comfortable head shave thanks to its 360° flexing head and 36 self-sharpening ComfortCut blades. Ideal for both men and women seeking a fast, cordless, water-resistant shaver with plenty of accessories.
Pros & Cons

Pros

  • 360° flexing head adapts to head shape for less irritation
  • ComfortCut blades deliver a smooth, comfortable shave
  • Fast charging and 90-minute cordless runtime
  • Water-resistant and easy to clean (IPX7)
  • Comes with extra blades and premium travel case

Cons

  • No reviews yet, so real-world performance is unverified
  • Some users may prefer a more compact design for travel
  • Replacement blades may need to be purchased over time, increasing long-term cost
Detailed Review

The Philips Norelco Head Shaver Pro 9000 is a premium electric head shaver designed for both men and women who want a fast, comfortable way to maintain a sleek bald head. From America's #1 electric shave brand, this model combines a 360° flexing head, PowerAdapt sensor technology, and 36 self-sharpening ComfortCut blades to deliver an even, close shave without the tugging or irritation often associated with traditional razors.

In real-world use, the 360° flexing head is the standout feature. It rotates freely to stay in contact with your scalp's curves and hard-to-reach areas, while automatically adjusting pressure to prevent discomfort. The PowerAdapt sensor reads hair density 125 times per second and boosts power exactly when needed, making a full head shave feel surprisingly quick and effortless.

Build quality and design are clearly well thought out. The ergonomic body provides a secure grip even with wet hands, and the IPX7 water resistance means you can shave in the shower and simply rinse the shaver under a tap. A hair collection system helps minimize mess, and the included luxury case and protective cap make it easy to pack for travel.

The retail package is generous: you get the shaver, a rinsing station, a luxury case, a protective cap, and 4 extra replacement blades. With a 90-minute runtime and a 5-minute quick charge for one full shave, the Pro 9000 is built for daily use. Just note that this is a new product without customer reviews yet, so it may take a few uses to see how the long-term blade life holds up for you.

Overall, the Philips Norelco Head Shaver Pro 9000 is a powerful, comfortable head shaver loaded with features that solve the biggest pain points of head shaving. It is an excellent choice for anyone looking for a dependable cordless shaver that works wet or dry, and it also makes a great gift for someone who wants a polished, easy grooming routine.

2
Editor's Pick

Philips Norelco 2400 Series Wet & Dry Electric

PhilipsNorelco
9.5 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
The Philips Norelco 2400 Series delivers a dependable daily shave with wet/dry capability and 40-minute battery life at an affordable price point. Best for men seeking a convenient, travel-friendly rotary shaver for regular stubble maintenance rather than close shaves.
Pros & Cons

Pros

  • Excellent value for price with reliable daily shaving performance
  • Long battery life (up to 3 weeks between charges per user reports) reduces charging frequency
  • Comfortable grip and lightweight design suitable for extended use and travel
  • Easy maintenance with one-touch open design for quick rinsing
  • Safe, smooth operation minimizes nicks and cuts compared to traditional razors

Cons

  • Does not provide razor-close shave; leaves visible stubble for those seeking skin-tight results
  • Blade sharpness may decline faster than advertised 2-year lifespan with heavy daily use
  • Requires patience and multiple passes for optimal results, not ideal for quick shaves
Detailed Review

The Philips Norelco 2400 Series is an affordable rotary electric shaver designed for men who prioritize convenience and daily grooming over precision. This wet and dry model appeals to busy professionals, travelers, and anyone seeking an easy-to-use alternative to traditional razors without breaking the bank.

The standout feature is the 27 self-sharpening ComfortCut Blades paired with 4D Pivot & Flex Heads that adapt to your facial contours. Users report smooth, comfortable shaves with minimal irritation, especially when paired with shaving cream. The 40-minute battery life is impressive, with verified reviews indicating some users go 3 weeks between charges. The pop-up trimmer handles mustache and sideburn detail work effectively, and the one-touch open design makes cleaning under running water quick and painless.

Build quality feels solid for the price point. The compact, lightweight design makes it genuinely portable, and the hypoallergenic steel construction resists corrosion. However, it's important to note this shaver requires a USB power adapter (not included) and cannot operate while charging, which may inconvenience some users.

The main drawback is shaving closeness. This is a trimmer rather than a close-shaver, leaving some stubble visible. Multiple passes with a light touch and shaving cream improve results significantly. Some users report blade dulling within 6 months rather than the advertised 2 years, though this varies by usage and technique. It's not suitable if you need a razor-tight shave for special occasions.

Verdict: The Philips Norelco 2400 Series excels as a reliable daily driver for stubble maintenance and casual grooming. Recommended for travelers, gym-goers, and men who value convenience and safety over absolute closeness. Not ideal for those seeking a traditional razor-smooth finish or heavy beard trimming.

Specifications

Model: X3001/90

Package Dimensions: 7.52 x 3.94 x 3.19 inches

Weight: 6.24 ounces

Battery Type: NiMH rechargeable (included)

Battery Life: 40 minutes per full charge

Charge Time: 1 hour full charge, 5 minutes for one shave

Blade Count: 27 self-sharpening ComfortCut Blades

Blade Lifespan: 2-year lifetime

Head Type: 4D Pivot & Flex rotary heads

Operation: Wet and dry capable

Charging: USB-A cable (power adapter not included)

Additional Features: Pop-up trimmer, one-touch open for easy cleaning, hypoallergenic steel construction

Buyer Guide

Is This Shaver Right for You?

Choose the Philips Norelco 2400 Series if you shave daily for maintenance rather than seeking a close shave, travel frequently, prefer safety over closeness, have sensitive skin, or want an affordable electric shaver entry point. This model works well for light to medium facial hair and casual grooming routines.

Not Recommended If: You need a razor-tight shave for formal occasions, have very thick or heavy facial hair, prefer corded electric shavers, or require the shaver to operate while charging.

Tips for Best Results: Apply a light layer of shaving cream or gel before use. Make two passes over each area, with the second pass being deliberate and methodical. Take your time rather than rushing. Clean the blades weekly for optimal performance. Use a 5V/5A power adapter for fastest charging.

Maintenance: Rinse blades under running water after each use via the one-touch open mechanism. Replace blades every 2 years or sooner if performance declines. Store in a dry location and avoid leaving on charger for extended periods.

3
Limited Time

Philips Norelco 3600 Wet & Dry Electric Shaver

PhilipsNorelco
9.6 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
The Philips Norelco 3600 delivers a smooth, comfortable shave with 27 self-sharpening blades and 5D flex heads that adapt to your skin. Ideal for men seeking an affordable, reliable rotary shaver that works wet or dry.
Pros & Cons

Pros

  • Delivers a remarkably close shave that rivals blade razors after a brief adjustment period
  • Quiet operation with excellent balance and ergonomic design for comfortable handling
  • Fast charging and long battery life mean you can shave daily without frequent recharging
  • Easy to clean and maintain with fully washable components and durable construction
  • Great value for money compared to premium rotary shavers with similar performance

Cons

  • Requires a few uses to break in the screens before achieving optimal shave quality
  • Does not shave quite as closely as traditional blade razors on first pass
  • Some users report charging cable connection can be finicky after extended use
Detailed Review

The Philips Norelco 3600 is a wet and dry rotary shaver designed for men who want a reliable, affordable electric shaving solution. Whether you're a daily commuter looking for convenience or someone transitioning from blade razors, this shaver delivers solid performance without unnecessary complexity or premium pricing.

What sets this shaver apart is its thoughtful engineering. The 27 self-sharpening ComfortCut blades cut hair just above skin level for a clean finish, while the 5D Flex Heads maintain consistent contact with your face to minimize nicks and cuts. Users consistently report that after a brief break-in period of a few uses, the shave quality becomes noticeably closer and more satisfying. The hypoallergenic steel construction protects sensitive skin, making this a good choice for those prone to irritation.

The design excels in practical usability. The shaver is well-balanced, quiet during operation, and feels natural in hand. Its fully washable design means cleanup takes seconds under running water. The 60-minute battery lasts about a week of daily use, and the USB-A charging is convenient for travel. Many users appreciate the option to shave dry with pre-shave splash or wet in the shower, providing genuine versatility for different routines.

The main consideration is that this delivers a very good shave rather than the absolute closest shave possible. Compared to traditional blade razors, you may need an extra minute or two and slightly lighter touch to get optimal results. However, reviewers consistently note this tradeoff is worthwhile for the speed, ease, and comfort the rotary design provides.

The Philips Norelco 3600 represents excellent value for money. It's backed by a brand with decades of rotary shaver expertise, offers dependable performance, and costs significantly less than premium alternatives. For men seeking a practical, effective daily shaver that won't break the bank, this is a compelling choice.

Specifications

Model Number: S3243/91

Blade System: 27 self-sharpening ComfortCut blades with 2-year lifetime

Head Technology: 5D Flex Heads for adaptive skin contact

Shaving Modes: Wet and dry compatible, shower-safe

Battery: Lithium Ion rechargeable battery

Battery Life: 60 minutes shaving time per full charge

Charging: USB-A cable (power adapter not included)

Design: Fully washable head and body

Blade Material: Hypoallergenic steel

Package Dimensions: 7.44 x 5.51 x 3.19 inches

Weight: 6.56 ounces

Brand Ranking: Number 2 in Men's Rotary Shavers category

Buyer Guide

Is This Right for You? The Norelco 3600 works best for men who prioritize convenience and value over premium features. If you're switching from blade razors, expect a slight learning curve but improved speed and comfort once adjusted. This shaver excels for daily maintenance shaving rather than tackling heavy multi-day stubble.

Tips for Best Results: Apply pre-shave splash like Lectric Shave before dry shaving to reduce friction and improve glide. Allow the blades a few uses to break in for optimal performance. Use a lighter touch rather than pressing hard for the best balance of closeness and comfort. Charge regularly after 4-5 shaves to maintain consistent blade performance.

Maintenance: Rinse the head under running water immediately after each shave to remove hair clippings. The fully washable design makes this quick and easy. Replace the blade cartridge approximately every 2 years, or sooner if you notice reduced cutting efficiency.

Alternatives to Consider: If you need an even closer shave, premium Norelco models with additional features may appeal to you. If you prefer foil-style shavers, Braun and Panasonic offer comparable alternatives. However, for the price point and reliability, the 3600 offers excellent value in the rotary category.

4
Top Rated

Philips Norelco i9000 Rotary Electric Shaver

PhilipsNorelco
9.8 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
The Philips Norelco i9000 is a premium rotary shaver designed for men seeking a close, comfortable shave with advanced technology. With its high rating and robust feature set, it's ideal for daily users who prioritize both performance and skin comfort.
Pros & Cons

Pros

  • Excellent shaving performance with smooth, irritation-free results
  • Durable construction built to last years with proper care
  • Flexible wet and dry operation suits any grooming routine
  • User-friendly design with intuitive controls and easy maintenance
  • Strong customer satisfaction with consistently positive feedback

Cons

  • Premium price point may be steep for budget-conscious shoppers
  • Rotary shavers require a learning curve for first-time users unfamiliar with the technology
  • Replacement heads and accessories add to long-term ownership costs
Detailed Review

The Philips Norelco i9000 is a premium rotary electric shaver designed for men who demand professional-grade shaving performance. This device is perfect for daily users, business professionals, and anyone with sensitive skin looking for a reliable grooming solution that delivers consistent results.

The standout feature of the i9000 is its advanced rotary blade system, which works in harmony to capture and cut hair at skin level for a close shave without the harshness of traditional razors. Real-world performance shows that users enjoy smooth, comfortable shaves with minimal irritation, even on sensitive areas. The waterproof construction means you can shave in the shower or use it dry, giving you complete flexibility in your grooming routine.

Design and build quality are exceptional, with a sleek ink black finish that looks premium in any bathroom. The ergonomic handle reduces hand fatigue during longer shaving sessions, and the overall construction feels durable and well-engineered. The shaving head is straightforward to clean, and the intuitive controls make operation simple for users of all experience levels.

The main drawback is the price, which positions this as a luxury grooming investment rather than an entry-level option. Additionally, if you're switching from a cartridge razor, the rotary technology takes some getting used to. Replacement heads and accessories also represent ongoing costs, though the shaver's longevity helps offset this consideration.

The Philips Norelco i9000 earns its strong customer ratings by delivering reliable, comfortable shaving performance day after day. If you're ready to invest in a premium shaver that prioritizes skin comfort and shaving quality, this is a solid choice that won't disappoint.

Buyer Guide

Consider the Philips Norelco i9000 if you shave daily and want a single device that handles both wet and dry shaving. This shaver suits men with sensitive skin particularly well, as the rotary technology minimizes nicks and irritation compared to foil shavers.

The i9000 is an investment piece, so evaluate whether the premium price aligns with your grooming priorities. If you travel frequently, the cordless design and waterproof construction make it travel-friendly. Budget an additional amount for replacement heads every 12-18 months to maintain peak performance and hygiene.

Compare this model with other rotary shavers in the same price range to ensure you're getting the features you need. Read user reviews focusing on longevity and comfort to validate whether this shaver matches your specific skin type and shaving habits.

5

Philips Norelco i9000 Prestige Ultra Electric

Norelco
9.5 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
The Philips Norelco i9000 Prestige Ultra delivers an exceptionally close shave with 360-degree NanoTech blades and AI-powered pressure feedback, ideal for men with sensitive skin seeking a personalized, comfortable grooming experience.
Pros & Cons

Pros

  • Extremely close shave with minimal irritation
  • AI customization adapts to your shaving style
  • Flexible heads reach difficult areas like neck and nose
  • Hydro SkinGlide coating protects sensitive skin
  • Comprehensive accessory set including travel case

Cons

  • High price point may not suit all budgets
  • Power adapter not included, requires separate purchase or USB-A cable
  • AI features may have a learning curve for some users
Detailed Review

The Philips Norelco i9000 Prestige Ultra is a premium electric shaver designed for men who demand the closest possible shave with maximum comfort. It targets those with sensitive skin or a thick beard, offering advanced AI technology and precision engineering to deliver a smooth, irritation-free result every time.

Standout features include the Triple Action Lift & Cut system with 360-degree rotating NanoTech blades that perform 165,000 cutting actions per minute, achieving a closeness of up to 0.08mm. The AI-powered SenseIQ Pro provides real-time pressure and motion feedback, allowing you to adjust shaving technique for optimal performance. In real-world use, the shaver glides effortlessly over skin, reducing friction by 50% thanks to the Hydro SkinGlide coating with 500,000 hydrophilic beads per cm.

Design and build quality are exceptional. The compact Precision Flex Heads maintain contact even on tricky contours like the neck and under the nose, while the 100% waterproof construction enables both wet and dry shaving. The included Quick Clean Pod removes debris 10x better than water alone, and the premium travel case ensures protection on the go. The shaver also connects via Bluetooth to an app that tracks your shaving habits and device performance, helping you improve over time.

Drawbacks include the high price, which may be prohibitive for some. Additionally, the power adapter is not included; you will need a USB-A cable and a compatible wall plug. Some users may find the AI features require an initial adjustment period to get the most out of the customization modes.

Overall, the Philips Norelco i9000 Prestige Ultra is a top-tier electric shaver that combines cutting-edge technology with superior comfort and convenience. If you are willing to invest in a premium grooming tool that delivers consistently close shaves with minimal irritation, this shaver is an excellent choice.

6

Philips Norelco 5400 Rotary Electric Shaver

PhilipsNorelco
9.6 /10
AI Score
AI score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the AI tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more ›
The Philips Norelco 5400 delivers a noticeably closer shave than older Norelco models thanks to its SenseIQ intelligent technology that adapts to your beard density. Ideal for men seeking a time-saving alternative to blade razors without sacrificing shave quality.
Pros & Cons

Pros

  • Noticeably smoother and closer shave compared to older Norelco models and some blade razors
  • Exceptional battery longevity, with users reporting 30+ days between charges with daily use
  • Smooth, gentle operation without pulling, snagging, or causing razor burn for most users
  • Modern design with improved cleaning accessibility compared to previous generations
  • USB charging flexibility allows charging from multiple power sources while traveling

Cons

  • Requires regular blade cleaning after each use to maintain optimal shaving performance
  • Does not include a wall power adapter, only USB-A cable, so you may need to source your own adapter
  • May require an adjustment period as skin acclimates to the new shaver, potentially causing temporary redness
Detailed Review

The Philips Norelco 5400 is a premium rotary electric shaver designed for men who want to eliminate the hassle of traditional blade razors without compromising on shave quality. With its intelligent SenseIQ technology and modern engineering, it's ideal for busy professionals, frequent travelers, and anyone seeking a smoother, faster grooming routine.

The standout feature is its SenseIQ intelligent technology, which senses your beard density and automatically adjusts power to deliver an exceptionally close shave. Users consistently report that the 5400 outperforms older Norelco models and rivals traditional blade razors in closeness, while dramatically reducing shaving time from 10 minutes to just 2 minutes. The waterproof design supports both wet and dry shaving, giving you flexibility in your grooming routine.

Build quality is exceptional, with a modern, ergonomic design that's easy to handle and maintain. The improved cleaning mechanism features a flip-open top with a shallow recess, eliminating the deep crevices found in older models where hair debris would accumulate. The included USB-A charging cable offers convenient charging options, though you'll need to provide your own wall adapter or use existing USB chargers from phones or computers.

Battery performance is a highlight, with verified users reporting 30 to 37 days of daily use on a single charge. One consideration is that optimal performance requires regular blade cleaning after each use, taking about 4-5 minutes. Some users with sensitive skin noted a brief adjustment period, but most found the shave to be gentle and irritation-free once acclimated.

The Philips Norelco 5400 is an outstanding investment for anyone seeking a high-quality, time-saving electric shaver. Its combination of intelligent technology, exceptional battery life, and superior shave quality makes it a genuine upgrade from budget models and older Norelco shavers. If you're willing to invest in a premium grooming tool and commit to regular maintenance, this shaver delivers professional results day after day.

Specifications

Model: S5880/81

Dimensions: 9.3 x 4.7 x 10.2 inches

Weight: 14.39 ounces

Power Source: Lithium Ion rechargeable battery (included)

Charging: USB-A cable (wall adapter not included)

Shaving Type: Rotary, 3-head system

Water Resistance: Waterproof, suitable for wet and dry shaving

Features: SenseIQ intelligent technology, precision cutting heads, pop-up trimmer

Color: Storm Blue

Manufacturer: Philips Norelco

Date Available: September 2022

Buyer Guide

Is This Right for You?

The Philips Norelco 5400 is ideal if you value convenience, speed, and shave quality. It's perfect for men who currently use blade razors but want to cut grooming time in half, or those upgrading from budget electric shavers. If you shave daily or multiple times per week, the exceptional battery life and low maintenance will appeal to you.

Key Considerations Before Buying

You'll need to commit to cleaning the blades regularly, as performance drops noticeably without proper maintenance. The shaver requires a USB wall adapter (not included), though most people have compatible chargers available. Allow your skin a few days to adjust to the new shaver, as some temporary redness is normal during the transition period.

Maintenance Tips

Clean the blades after each shave by rinsing under running water, then allow to air dry completely. Deep cleaning once per week with the included brush will extend blade life and maintain peak performance. Store in a dry location away from moisture when not in use.

Buying Guide: How to Choose the Best Philips Norelco Shaver

Selecting the right electric shaver involves more than just picking the most expensive model. Here are the key factors to consider when comparing Philips Norelco shavers.

Blade Technology and Comfort

Philips Norelco uses two main blade systems: ComfortCut and NanoTech Precision. ComfortCut blades, found in the 2400 and 3600 series, are self-sharpening and designed to cut hair just above skin level, reducing irritation for sensitive skin. The more advanced NanoTech Precision blades, used in the i9000 Prestige, feature a triple-action lift and cut that grabs longer hairs and cuts them closer to the skin. For those who prioritize closeness without irritation, the NanoTech system is a standout.

Flexibility and Head Movement

The shaver’s ability to adapt to facial contours directly affects comfort and efficiency. The Head Shaver Pro 9000 has a 360-degree flexing head that follows the curves of your scalp, making it ideal for bald heads. The i9000 Prestige uses Precision Flex heads that pivot in multiple directions for tight spots like the jawline and under the nose. Entry-level models like the 2400 have a fixed head, which works fine for basic shaving but may require more passes on uneven areas.

Smart Features and Personalization

Higher-end Philips Norelco shavers come with intelligent sensors that adjust power based on hair density. The i9000 Prestige features AI-powered SenseIQ Pro with live pressure feedback and five custom modes, plus Bluetooth connectivity for app tracking. The Head Shaver Pro 9000 has PowerAdapt that reads hair density 125 times per second. These features are especially useful if you have varying hair thickness or want a more tailored shave. For a comparison of different technologies, see our Comparisons page.

Wet/Dry Capability and Maintenance

All models in this roundup are IPX7 waterproof, meaning you can use them in the shower for a wet shave with foam or gel. Wet shaving often reduces friction and provides a more comfortable experience. For cleaning, the 5400 series includes a Quick Clean Pod that removes debris more effectively than rinsing. The Head Shaver Pro 9000 has a hair collection system and a rinsing station. Easy maintenance extends the life of your shaver and ensures hygienic use. For more on grooming tools, visit our Electric Shavers category.

Final Thoughts

After reviewing these six Philips Norelco shavers, our top recommendation depends on your priorities. For the ultimate in luxury and personalized shaving, the Philips Norelco i9000 Prestige Ultra Electric stands out with its AI-powered sensors and NanoTech blades, delivering an exceptionally close and comfortable shave. If you need a versatile shaver for both head and face, the Philips Norelco Head Shaver Pro 9000 Electric is a fantastic choice, thanks to its 360-degree flexing head and PowerAdapt technology. Both models are built to last and offer a superior shaving experience that justifies the investment.

Frequently Asked Questions

How do I choose the best Philips Norelco shaver for my skin type?

For sensitive skin, look for models with ComfortCut blades like the 2400 or 3600 series, which cut hair above skin level to reduce irritation. If you have thicker or coarser hair, the i9000 Prestige with NanoTech blades and skin glide coating offers a smoother shave with less friction. All models are suitable for wet or dry use, so you can use shaving cream for extra protection.

What is the difference between the Philips Norelco 2400 and 3600 series?

The 2400 series is a basic entry-level shaver with a fixed head and 27 self-sharpening blades, ideal for quick daily shaves. The 3600 series adds more flexibility with a pivoting head and a pop-up trimmer for sideburns and mustaches, making it a better choice if you need versatility. Both are wet/dry and offer a 2-year blade lifetime.

Are Philips Norelco shavers good for head shaving?

Yes, especially the Philips Norelco Head Shaver Pro 9000, which is specifically designed for scalp shaving. Its 360-degree flexing head adapts to the curves of your head, and the ComfortCut blades provide a close, comfortable shave. The ergonomic design and hair collection system make it easy to use and clean. For more recommendations, see our guide on top philips shavers for every need.

How often should I replace the blades on my Philips Norelco shaver?

Philips Norelco recommends replacing the shaving heads every two years to maintain optimal performance. Many models, like the 2400 and 3600 series, have blades with a 2-year lifetime guarantee. The i9000 Prestige has a longer warranty of up to 7 years, but the heads still need periodic replacement depending on usage. Always check the indicator light or app for replacement reminders.