I purchased these gamepad from amazon and I had a really very bad experiance with it.
The device is not comfortable at all to hold and when playing games it lage sometimes which is very disturbing.
If we talk about the battery backup then it uses lits of power and have to get a new battery now and then. The device looks very cheep and gives a plastic look.
The vibration of the F710 gamepad is very weak the built quality is also very bad it will a waste of money I purchased it just to play games in laptop and it really dissapointed me.
It is a very weak device and it is not at all favourable for people who need great experiance.
I would recommand you get some other gamepad which will be better than the F710 gamepad.