Philips Sonicare Series 3100 Marine Blue Electric Toothbrush

Name: Philips Sonicare Series 3100 Marine Blue Electric Toothbrush
Brand: Sainsbury's
SKU: 8158903
Price: 80.00 GBP
Availability: InStock
Rating: 4.825 (40 reviews)

Read reviews (40)

Philips Sonicare 3100 Electric Toothbrush – Gentle Care & Advanced Cleaning

£80.00£80.00 / ea

Product details

Description

Achieve up to 5x better plaque removal¹: gentle yet effective W Optimal White brush head with densely-packed bristles to target plaque and provide a refreshing clean

Enjoy a superior clean with 31,000 bristle movements per minute; Sonicare’s fluid action reaches deep between the teeth and along the gumline to effectively remove plaque. Achieve a month’s worth of manual brushing in just 2 minutes* for a healthier, brighter smile.

Helps protect your gums with the pressure sensor: a smart optic sensor detects excessive pressure − simply ease off when you feel gentle vibrations, and your gums will stay protected

Choose between High, Medium and Low intensity settings for your personalised brushing; whether you prefer a gentler clean or a bit more power, the choice is yours

Easy Start feature facilitates the transition from a manual to an electric toothbrush with a gradual, gentle increase in brushing power across your first 14 brushing sessions

Optimise your brushing routine: every 30 seconds, the QuadPacer will prompt you to clean a new area; after 2 minutes, the SmartTimer will indicate your session is complete

A rechargeable electric toothbrush with up to 14 days of battery life from a single charge – perfect for everyday use and travel, reducing the need for frequent charging

Philips Sonicare 3100 Electric Toothbrush – Gentle Care & Advanced Cleaning Upgrade your oral care routine with the Philips Sonicare 3100 sonic electric toothbrush, designed for a superior clean and a brighter smile. Paired with the W Optimal White brush head, it removes up to 5x more plaque than a manual toothbrush¹, thanks to densely packed bristles that target plaque and deliver a refreshing clean. Experience 31,000 brush movements per minute and Sonicare Fluid Action that reaches deep between the teeth and along the gumline for a thorough, dentist-recommended clean. In just 2 minutes, you’ll achieve the equivalent of a month’s worth of manual brushing*. Protect your gums: A smart pressure sensor detects excessive brushing force and alerts you with gentle vibrations, helping you ease off and maintain gum health. Customise your brushing: Choose from High, Medium, and Low intensity settings for a personalised clean that suits your comfort level. Smart features for better brushing: EasyStart: Gradually increases power over the first 14 uses for a smooth transition. QuadPacer & SmarTimer: Guides you to the dentist-recommended 2-minute brushing time. Long-lasting battery: Up to 14 days of use on a single charge, perfect for home and travel. What's included: 1x Philips Sonicare 3100 sonic electric toothbrush, 1x W Optimal White brush heads, 1x USB-A charging stand; adapater not included ¹ Compared to a manual toothbrush. *Based on two periods of two-minute brushing per day on standard mode.

Adapater not included

Ratings summary

4.8 out of 5

High Performance Electric ToothbrushI have used electric toothbrushes previously and have been very happy but I’ve found this sonicare 3100 to be far superior. Firstly, it leaves my teeth feeling exceptionally clean and shiny. I love the 3 intensities, especially useful for use on my one particular sensitive tooth. The long battery life makes it very practical too.

5 out of 5

Written by Elsie249th March 2026Yes, I recommend this product

Written by a customer on philips.com

Received free product

Powerful everyday toothbrushI've been using electric toothbrushes for a few years now, but typically I've always gone for brands that use a more circular brush head, so when I saw the Sonicare 3000 had a more traditional brush head shape I was excited to give it a try!

First of all this brush is incredibly light, so it's good to use for all ages. Pair that with the different speed settings and you've got a perfect brushing experience.

The simplicity of the brush is probably it's biggest selling point, with a simple tap of the button to get started, or change your speeds. I like the light display for charge too, making it easier to understand when you need to plug your brush in.

Now comparing brush shapes, I think actually prefer this one! It feels like it gets to more areas of the mouth, getting better coverage with far less effort. Circular heads can stay in the past

My favourite element of this is probably that you have a USB charger included, meaning no specialist plug or adapter is needed to charge this brush.

Overall this has been an incredible product to use so far, and even after a few weeks of use I can already feel that my teeth are that little bit cleaner.

5 out of 5

Written by Rob a lob9th March 2026Yes, I recommend this product

Clean and gentleI’ve been using this electric toothbrush for a while and it gives a really thorough clean. My teeth feel much smoother compared to using a manual brush, and it’s gentle on my gums too. The timer is helpful for making sure I brush long enough, and the battery lasts ages between charges.

5 out of 5

Written by Alan Alan5th March 2026Yes, I recommend this product

Written by a customer on philips.com

Received free product

Sonic toothbrushI have been using my new Philips Sonicare toothbrush for a few weeks and it has proved to be a very positive improvement. The initial thought was that it is like a very high vibration and a bit of a strange sensation, but having got used to that (fairly quickly) I find it to be pleasant and refreshing. I cant be certain yet, but I do genuinely feel ,my teeth are becoming visibly whiter. Overall I have found this to be a great product, but I do find it a little confusing changing the speed/setting, which results in me turning the brush on and find its only on the first speed setting.
Apart from this minor issue, I have no problem in recommending this product if you are considering an electric toothbrush. Its definitely a 9 out of 10 from me.

5 out of 5

Written by Jelly Bellyxx3rd March 2026Yes, I recommend this product

Written by a customer on philips.com

Received free product

Perfect for beginers!I am new to electric toothbrushes and I am very impressed with this Philips electric toothbrush. Comfortable size and nice to hold, the battery last around two weeks and it comes with a travel case inlcuded.
It has a few intensity levels and the timer, so it was easy to begin and get to used to it.
Afrer using it, my teeth feel nice and polished, much cleaner compared to when I use a manual toothbrush.
All I can say I'm not coming back to manual toothbrushes!

5 out of 5

Written by Ukeba28th February 2026Yes, I recommend this product

Written by a customer on philips.com

Received free product

Feels like a Professional Clean! No Regrets.I’ve been using this Sonicare for a while now and honestly it’s a huge step up from manual brushing. My teeth feel properly clean, like that smooth just left the hygienist feeling, and my gums feel healthier too. With a normal toothbrush I always felt like I had to really scrub to get that clean sensation. With this, it does the work for you and it’s much more thorough without being harsh.
I’ve also used the Philips Sonicare DiamondClean before, and in everyday use this isn’t that different at all. The cleaning performance feels very similar, and unless you really care about the extra cosmetic features, you’re not missing much. For the price, this one is genuinely impressive and I’d happily buy it again.

5 out of 5

Written by Slick4Tech23rd February 2026Yes, I recommend this product

Written by a customer on philips.com

Received free product

Cleans EffectivelyI have been using this toothbrush for a few weeks now and my teeth do feel noticeably cleaner – they still have that ‘smooth’ feeling even a few hours after eating.

The toothbrush is nice to hold and brush with, particularly in massaging behind my front teeth. I would have preferred a bigger head to brush with, but that it what I’ve been used to brushing with previously.

It isn’t too noisy – and I didn’t notice a lot of difference between low/medium/high settings. It makes a higher pitched noise if it isn’t connecting with the teeth right, for example if you press too hard or are brushing at the wrong angle.

The charge seems to last a long time and I’ve only charged the toothbrush once so far, which is very convenient.

I found the gap between the toothbrush head and main part of the brush a little strange from an aesthetic point of view.

Notably, the bristles on the head appear to have bent a little, perhaps from pressing too hard? Or from the cap?

All in all, I have a positive view and experience of using the toothbrush and will continue using it.

4 out of 5

Written by

The product has great features. I love them.I threw this product because I have an Oral-B iQ toothbrush and I wanted to compare witch is better. I can honestly say that the Philips toothbrush is wonderful and better than Oral-B. The toothbrush cleaned my teeth very well from plaque.The battery lasted a very long time, over two weeks.I have braces and I can honestly say that the Brush head hasn't worn out, its the same as when I first got it. I've even recommended it to friends, and they boight the same toothbrush.

5 out of 5

Written by Madziarka18th February 2026Yes, I recommend this product

Written by a customer on philips.com

Received free product

Cleaner teeth with hardly any effortI’ve been testing this electric toothbrush and overall I’m happy with it. My teeth do feel cleaner and smoother after brushing, especially around the gums. It took me a few days to get used to the vibration but once I did, it was fine.
The battery lasts well and it’s easy to use, which I like. It’s not life changing but it’s definitely better than manual brushing and I’d keep using it.

4 out of 5

Written by 3parkle18th February 2026Yes, I recommend this product

Written by a customer on philips.com

Received free product

Great toothbrush for everyday useI am very happy with this toothbrush. It cleans my teeth very well and leaves my mouth feeling fresh after every use. The vibrations are gentle but effective, so brushing is comfortable even for sensitive teeth.

The battery lasts a long time and the toothbrush is easy to charge. I also like the simple design and that it is easy to use every day. After using it for some time, I noticed my teeth feel smoother and cleaner than with a manual toothbrush.

I would recommend this product to anyone who wants to improve their daily oral care and is looking for a good electric toothbrush at a reasonable price.

5 out of 5

Written by molinka10218th February 2026

Written by a customer on philips.com

Received free product

Showing 1 - 10 of 40 reviews

Item code: 8158903

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