Speaking from experience I can say that even after years of using an Oral-B floss action head, I noticed the difference with the CrossAction. The clean and the way it brushed the teeth was different. The whole app is engineered for the more premium Smart Series brushes, which the 650 is not a part of.​ Providing you then have the app open on your smartphone or tablet when you go to clean your teeth, the built-in microphones will listen out for the sound of the brush. You will struggle to find a cheaper electric toothbrush than this that offers performance and quality. At the end of the 2 minute cycle, the head will again change its oscillation to give another tone to confirm the cycle has ended.

To be honest, this is pretty much the average. For more cleaning time you will need to go bigger, heavier and more expensive and possibly too pay for features you do not want. Once you have completed the two minute cycle, the brush will continue to operate unless you press the power button again.The smaller brush head in comparison to most manual brushes, is scientifically engineered to ensure you get the best clean. Being smaller, you are able to easily reach more areas of the mouth. The addition of the 3D technology which rotates, oscillates and pulsates means that the brush head achieves a motion and cleaning pattern that is just not possible when compared to a manual brush.

The built-in timer in this brush is, in my opinion, a highly underrated feature. It is all too easy to think we have been brushing for longer than we have, as many of us get bored when completing a mundane task like cleaning the teeth. This built-in timer makes it simple. There is no excuse not to achieve the full 2 minutes. Take a look at the lower third of the brush find the battery power icon, above which is a small amount of branding, which is barely noticeable, embossed into the rubber. No brush would be complete without a brush head and with the Pro 650 we have on test here is a CrossAction head. A more recent addition to the Oral-B range this head has a series of angled bristles which are designed to effectively remove plaque but also ensure they clean deep between the teeth and provide a good coverage over teeth surfaces.It will last on average 7 days. That is based on 14 two minute cleans or approximately 28 minutes of brushing time. Inevitably the battery will run down on the Pro 650. With approximately 28 minutes of cleaning time. When power is low, the battery status icon on the front of the brush will illuminate red to notify you of this. Electric toothbrushes that are clinically proven to be superior to manual toothbrushes, providing benefits in removing more plaque for cleaner teeth and healthier gums. Oral-B electric toothbrushes remove up to 100% more plaque than a regular manual brush, which is why they are recommended by UK dentists and hygienists. Oral-B electric rechargeable toothbrushes (from Pro 600 model upwards) also whiten teeth starting from day one by removing surface stains. Electric toothbrushes are suitable from ages 3+, with specific kids electric toothbrush models available, and are gentle on gums and suitable for sensitive teeth. Electric rechargeable toothbrushes come with replacement toothbrush heads, which should be replaced every three months. If battery life is an issue the brush can be left constantly charging, technology in it will stop it from taking more power than it needs. However, to prolong the life of the battery, it is good to run the battery down regularly and at least once every 6 months, deplete it completely.