A:AnswerEither way. It is depends on your active use time. If there is no movement of the mouse it will automatically shut off. If you wish to turn it off yourself you can do that also.
A:AnswerYes, 100%. Works perfect with windows 10. Plug and play. No CD or software to install. Just plug the USB dongle (receiver). Put AA battery provided with I mouse. Turning and done.
A:AnswerI think so. It doesn't interfere with any keyboard I've had plugged in but I don't have experience with keyboards in any languages other than English.
A:AnswerThe default function of the side button is "browser page back." If you use Microsoft Mouse and Keyboard Center though, you can rebind this button to do a bunch of different things.