Philips Sonicare 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24

Love the toothbrush and the price. This seems to keep my teeth healthy and white. It also keeps my gums healthy and the two power level are great. The size is slim and the brush options are great, except the brush heads are costly, in my opinion. Good thing they don’t wear out that quickly and are very durable. It charges quickly.

I've been using $20-ish cheap knock-off sonic toothbrush. It's been working, but I got curious how Philips or Oral-B products are - they are definitely more expensive, and I've seen many good reviews on them. So here I tried this 4100 today for the first time. Definitely feeling the difference - garden hose vs fire hydrant. Brush head will be smaller then your expectation. This means you need to get busy brushing your entire teeth, but again the brush can reach to the deep area in your mouth = good for through cleaning. There are two levels of power you can control with a button. I am using the highest settings, works good. Timer feature is an added bonus.

Dateline: A Bathroom Sink, Under the Unforgiving Glare of the Vanity Lights. For years, the act of brushing your teeth has been a sleepy, half-conscious affair. A dull, buzzing ritual performed on autopilot before you either face the horrors of the day or collapse into bed. You thought you knew what an electric toothbrush felt like. You were wrong. You were living a lie. I am here to tell you about the Philips Sonicare 4100. And I am here to tell you that it is a different beast entirely. It sits in your hand with a comfortable, substantial heft—a proper tool, not some flimsy, skinny wand. The handle is sturdy, the build quality immaculate. It feels like a serious instrument for a serious job. I applied the paste, brought the brush to my teeth with the casual indifference born of long habit, and thumbed the power button. And was immediately jolted awake by a profound, high-frequency thrum. This was not the gentle back-and-forth of a lesser brush. This was a jump scare. A sudden, powerful hum that felt like I was holding a swarm of microscopic, hyper-caffeinated jackhammers against my teeth. This is the "sonic" part of the name, a technology that vibrates with a speed and intensity that is both shocking and deeply, profoundly effective. You can feel the difference. It's a sensation of being deep-cleaned, of having years of coffee stains and bad decisions power-washed into oblivion. There are smart features, of course. A pressure sensor that gently chides you if you're pressing too hard, a built-in coach to keep you from savaging your own gums. A timer that dutifully guides you through the quadrants of your mouth. The included cap for the brush head is a simple, welcome touch of practical genius. But we must address the one, single, baffling decision that holds this marvel back from pure, unadulterated perfection: the charger. In a world that has finally, blessedly, begun to standardize around the glorious, universal USB-C port, Philips has chosen to tether this futuristic cleaning wand to a proprietary, old-world charging base. It is a strange, frustrating relic, a small annoyance that requires its own dedicated spot on your counter, unable to join the happy family of your other modern chargers. Even so, that one grievance is a whisper in the face of the roaring, high-frequency hurricane of cleaning power this toothbrush provides. The Sonicare 4100 is an impressive, powerful, and brilliantly effective piece of technology. It transforms the most mundane of daily chores into a high-performance event. A five-star champion that will leave your mouth feeling cleaner than you ever thought possible.

Overall great toothbrush. Works well to clean and is gentle enough on my gums. I've used it for roughly 4 years now, however the button has now started completely disintegrating. I've never had that happen before and is the reason I now have to replace it. I was looking to buy a replacement and stumbled across this again. Tl;dr It works well, but the button disintegrated within 4 years.

Bought to replace an old electric toothbrush. It runs for 2 minutes total with beeps every 30 seconds to let you know to change areas. Small and compact. Great for travel as the battery will last for days in between charges. Makes teeth feel very clean.

I absolutely love this toothbrush! It works great and has made a noticeable difference in how clean my teeth feel compared to a manual brush. One of the best parts is the battery life—I can easily go a solid two weeks on a single charge, which makes it perfect for travel since I don't always have to bring the charger. It's also very easy to clean; the design is sleek and doesn't have a lot of tiny crevices where toothpaste can build up. They designed it with two intensity settings, so you can easily switch between the two speeds with the click of the button. If you want a reliable electric toothbrush without a bunch of unnecessary features, this is the one to get

Excellent toothbrush that has held up well for close to a year now. Tips are cheap and you do not need to buy them from Phillips. The pressure sensor is a great feature for sensitive teeth and has helped my gum health as well. The brush also works well for travel and is not noisy when in use.

We bought three of these electric toothbrushes on sale during Christmas time. Two of the three still hold a great charge but one seems to not hold a charge more than a few days. When they work, they are great brushes and the heads are nice sized to fit in any position around your mouth. Only difficult to reach spot is very back tooth on top and bottom