I have been using philips trimmer from almost three years and believe me not a single error or any defect arises. this is perfect deal .
It gives smooth without cut shaves any time ones you charge it full. And charging time is aroud three or four hours. This is full charge time. But you can charge it according to you but I will recommend you to charge it full.
Because half charging has bad effect on battery life.
You can move it according to you. Gentle and cutless shaves always.
Cheers up.