My first elec. Toothbrush was a favorable Oral B with turret (60). Then the battery was after about 2 years on. Since I was satisfied but I again bought Oral B. Now the top model with clock, etc. (150). Here the battery gave in after about 3 years. Have had to replace the battery on ebay and everything was back in order. This shows that the battery is an intentional breaking point. Now this battery also has given way again. And because the toothbrush is no longer so respectable, I decided to buy a new one. At first I wanted to Oral B but when I read that is used on all of these zinc battery and no LiPo, I decided for this. My first Philips, my first sonic toothbrush, my first without turret. + My teeth feel much cleaner and smoother than with the turret toothbrush + This toothbrush is much more gentle to the gums (the Begungen are very small and fast) + According inet it should also be gentler on the teeth, but it can not judge +++ LiPo battery, holds very well at other electronics, hope for longer life + Charging glass looks good and is a nice way of storage o not cheap but if it considers it would be alright o change heads as with all elec. Toothbrushes expensive but the shelf life is probably 3 months All in all, I had not expected that the toothbrush is the old turret toothbrushes so superior.