Philips Sonicare
Philips Sonicare 4100 Toothbrush
Model: HX3681/24Color: BlackUPC: 75020100764
Lowest at Amazon
$39.96 at AmazonLowest at any Popular Retailer
$29.00 at Abt ElectronicsWhere to Buy
Prices last updated: May 2nd 2026 10:20 am
Pros
- •Provides a noticeably deeper and more effective clean compared to manual toothbrushes, with positive dentist feedback on improved dental health and reduced plaque.
- •Lightweight, ergonomic design that’s comfortable to hold, with a sleek black finish and a slim brush head for easy maneuverability.
- •Includes a pressure sensor that alerts you when brushing too hard, promoting healthier brushing habits and protecting sensitive gums.
- •Features two intensity levels and a inute timer with 30-second intervals (quadpacer) to encourage thorough, dentist-recommended brushing.
- •Lonasting lithium-ion battery supports up to two weeks of use on a single charge, with a handy battery indicator on the handle.
- •Includes a travel case, making it convenient for use both at home and on the go.
- •Uses sonic technology delivering 31,000 brush strokes per minute for powerful yet gentle cleaning.
- •Smartimer and BrushSync technology remind you when to replace brush heads and help optimize brushing routines.
- •Good value for the cleaning power offered, performing similarly to more expensive Sonicare models in core cleaning effectiveness.
Cons
- •Replacement brush heads are expensive, adding significantly to ongoing maintenance costs.
- •The builn battery is non-replaceable, so when battery life eventually declines (usually after around 2 years), you must replace the entire toothbrush.
- •Some users experienced technical issues such as the power button becoming unreliable or the toothbrush vibrating intermittently before failure, with a small percentage reporting breakdowns after about a year.
- •The black handle tends to show toothpaste residue, which can look untidy.
- •Charging requires a USB cable plus an additional adapter brick, which is not included but can be requested from Philips with proof of purchase.
- •Initial use may feel intense or ticklish on some teeth, taking a short adjustment period for new users.
- •The device defaults to low intensity even if the “easy start” feature is off, requiring manual adjustment to high for maximum power.
- •Despite the solid initial build, seals around the brush head attachment might degrade with lonerm use.
- •Some users feel this model is less powerful compared to their previous Sonicare toothbrushes, though cleaning remains effective.
Bottom Line
The Philips Sonicare 4100 Power Toothbrush is an excellent entry-level electric toothbrush for anyone ready to ditch manual brushing and get professional-level clean without splurging on top-tier models. Its effective sonic cleaning, pressure sensor, and long battery life make it a reliable daily companion, especially if you prefer a simple and lightweight design. Just be prepared to invest in pricier replacement heads, and remember the built-in battery’s non-replaceable nature means this isn’t a lifetime gadget. If you want similar core performance but are willing to pay more for extra modes or app connectivity, consider exploring higher-end Sonicare models. Otherwise, this is a smart, efficient choice for clean teeth and healthier gums.
What Reviewers Are Saying
Praised
good battery life6%
good value3%
battery life is great10%
Criticized
takes a long time to charge6%
too many beeps3%
broke after a year6%
not very powerful3%
battery health declines6%
small brush head3%
weak power10%
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