It has a rounded shape although not perfectly cylindrical, it is a little deeper than it is wide, but it does feel relatively slim in hand.

What this all means is that it cleans the teeth really well, particularly if you make sure you are using the correct toothbrushing technique. With a regular clean, there is no particular reason or cause for concern in regards to the durability of this particular model.My hand’s on time achieved a maximum of 9 days or 18 brushing sessions of use. This is based on brushing twice a day for 2 minutes each time. Jon is a leading voice on electric toothbrushes and has been quoted by mainstream media publications for his opinions and expertise. At the 30 second intervals, the brush will provide an audible warning via a slight pause in the brush motor. This is your cue to change from one quadrant to another. Once the 2 minutes are up 3 brief pauses in the brush motor will be heard and felt. This is your cue that the clean is over.

The blue bristles within the head will fade over time to a pale blue/translucent colour. This is a cue for you to change. When charging the battery charging icon flashes green and it will stop flashing and go out when the brush is fully charged. A small but noteworthy point is that the motor in the Pro 2 series is a little more powerful. What this means is that the head moves a bit more during each clean. It could help produce better results in the long term, but honestly it does not make a significant difference, you still get a great clean from the 680. Passionate about business and helping others, Jon has been involved in various online enterprises since the early 2000s.So whilst it is a useful feature, the fact that it is hard to spot or realise it is even activated is a negative. The Pro 3 3500 has the visible sensor, which is much easier to detect. The case is a rounded rectangle shape, hinged on the left side like a book, with a clip on the right side to secure the case closed. Oral-B toothbrushes in particular are commonly sold with a heavy discount. Believe it or not, this is often around 50%, but it can be greater.