Oh it is great! it has a holder that you stick on the mirror then it holds your cellphone to run an app which get the info from the toothbrush while you are brushing your teeth. Then you can see if you clean your teeth correctly, where you do more preassure, where you need do better job, etc.
In my country I can get the Genius 5000 for 270 usd... here everything is more expensive, this is why I can't realize what is cheap and what isn't for american people. The clothes and shoes I buy there on Nike, in my country cost 100% more expensive. Since I'm going to U.S. I stopped buying things here.