Philips Sonicare 4100 Rechargeable Electric Toothbrush, with Pressure Sensor, 2 Intensity Settings, SmarTimer and QuadPacer, 14-Day Battery Life, Black, Model HX3681/24

This is my 1st electric toothbrush. I ordered it over the oral b smart 1500 because it's cheaper and I found more people who swear by it than oral b. Later on, I read comments where people who have this 4100 for 10+ years say that the newer 2021 version has only half the power of the old version. Someone on reddit showed images of the inside of the new and old versions and the new version has a small plastic toy-like motor, while the old version has a big copper-wrapped motor and an old version user said "now I understand why the new version is lighter and less powerful".I was disappointed on the new version and tried to cancel the order but I couldn't. Once it came, I decided to try it and to my surprise, it brushes my teeth way better than my manual soft-bristled and hard-bristled toothbrushes(I use both manual brushes daily compared to my daily usage of the electric toothbrush 4100 C2 head of medium bristles. If you have gum sensitive issue, buy the S sensitive or G2 optimal brush head. If you want hard-bristled, buy W diamondclean brush head).I don't know how good the old version was but this newer version definitely brushes better than any manual toothbrush unfortunately it doesn't not come with a travel case.Update 5/16/2024: I bought the Oral B smart 1500 because it was on sale and I wanted to see how better it is compared to the sonicare. The oral B package looks nicer and bigger than the Sonicare but upon opening the smart 1500 package, I saw hair all over the toothbrush. I did read many customers saying on reddit that their Oral b toothbrush were repackaged, but I can't believe I'm a victim of this nastiness. It also took 2 weeks to reach me from Hawaii and since it says "made in China", I think the seller is located in China.I'll return this and I'll advise you to buy the Sonicare instead of the oral b if you don't want to be cheated receiving a used-repackaged toothbrush.Update 05/22/2024: On 05/17/24, I bought the Oral b smart clean 360 which has exact power as the smart 1500 that I returned but the smart 360 has 5 modes and a button to change the mode while the smart 1500 has 3 modes and no button to switch between the modes.The advantage of the oral b smart clean 360 is that the brush heads cost is cheaper than the Sonicare 4100 and I find it better at whitening my teeth than the Sonicare. That's all the advantages there.The things that I don't like with it are many, so I'm just going to name the most annoying ones:1) The brush heads are too big compared to the Sonicare(see picture):Putting Oral b brush heads in my mouth is like putting a golf ball in my mouth(my head and mouth are wider than the average US male).2) The brush heads have holes(see pictures) that trap saliva+toothpaste and creates more noise when the brush handle needle rotates in the presence of the liquid mixture, and moisture will be also trapped easily in the holes(most customers complain about Oral b brush heads design. Oral b corrected the needle issue with the IO version but the IO introduced a shallow hole which now traps moisture in the brush handle).When I'm using the Oral b with no choice but to have my mouth wide-open, it forces my mouth to produce more saliva which gets mixed with the toothpaste and enters the brush head and creates more noise.3) Rattling noise: The Oral b smart clean 360 isn't as noisy as people say. It's the quality of the noise the problem. It's a very unpleasant rattling noise as if you're hearing an old car engine with broken parts in it. That noise gets worse when liquid enters the brush head holes.4) The charger is not round like a perfect circle:You must put the Oral b brush handle in a specific position to charge it and if you place it wrong, it'll fall and might break.5) The Daily Clean mode is rough and combined with the big brush head the experience is bad, but the smart clean 360 has more mode which make it smoother and better than the smart 1500 but not as good as the Sonicare 4100.6)It has no auto-stop mode: You keep brushing without knowing how long you have been brushing your teeth.To summarize, the oral b non-IO brush heads are cheap but very badly designed for a pleasant toothbrushing. I won't recommend it if you're shorter than 6 foot tall or have a small mouth.

This brush is AMAZING! I had not been using an electric toothbrush, so the first few times I brushed with this one, it felt a little weird. But I discovered that there is a setting to make it gradually increase the power when you start out so that you adjust to it better. It's done a great job f cleaning my teeth and I feel a difference already!

The battery lasts about a week and a half before beeping due to low charge.

I've used sonicare E series for many years (10 maybe 15), essentially it seemed indestuctable. The reason I'm replacing it is, first of all, I was concered about it just failing at the wrong time and since I needed new heads I figured it was time. That brings about the second reason, the cost and availability of replacement heads. Yes I found aftermarket substitutes from different sellers, and they were much more affordable, but the ether didn't fit at all (would not fuction) or they ratttled and buzzed because of loose fit. The latter issue could be remedied by running the 2 connection points under warm water causing the plastic to expand and rendring a tighter fit. While that was a usable fix it could be annoying.After using my new 4100 I am very happy with it. The only reason I rated it at 4 (1/2) stars was I find the 2 intensities, and the 30 second QuadPacer somewhat useless. RFID chip may also be overkill.When it comes time to replace heads I will try different models as the C2 head supplied with the 4100 seems a little small.

I’ve been using the Philips Sonicare 4100 twice a day, and overall, it has been a fantastic upgrade to my oral care routine. One of its standout features is the long battery life—I can go over a week before needing to recharge, which is great for convenience, especially for travel.The brush head design is another major plus. It has a comfortable tip that easily reaches tricky areas, ensuring a thorough clean without feeling bulky or awkward in the mouth. The two-speed vibration settings offer some flexibility, though I personally stick to the lower speed. The higher speed is a nice option, but for those with sensitive teeth or gums, it can feel either uncomfortable or even ticklish, which might take some getting used to.Overall, the Sonicare 4100 is a solid electric toothbrush that delivers effective cleaning power without unnecessary frills. If you’re looking for something with a simple yet efficient design, great battery life, and a reliable clean, this is a great choice. Just be mindful of the vibration intensity if you have sensitivity issues. Highly recommended for those upgrading from a manual brush or looking for an affordable yet high-performing electric toothbrush!

This electric toothbrush is fantastic! The brushing power is noticeably stronger than manual brushes, giving my teeth a thorough, deep clean every time. The multiple brushing modes cater to different needs, from gentle for sensitive teeth to stronger for a more intense clean. The ergonomic handle makes it easy to grip, and the timer ensures I brush for the recommended two minutes. I love how my teeth feel cleaner and smoother, and my gums are healthier. The battery life is impressive, and charging is quick and easy. Overall, this toothbrush provides an amazing, effective brushing experience. Highly recommend!