The mouse I use only for brief Working with the notebook, since it ergonomically but not so well in the hand is to me as the Logitech mice. The mouse has no side forward and no Back button. Battery change is cumbersome: the upper shell must it be removed. The reinsertion of the cover designed to fiddly. 2 AA batteries are supposed to be inserted, which makes unnecessarily difficult the mouse. I have one of them away - the mouse will still work. On the underside of the mouse has an on-off slide and the USB receiver can be stowed away, so you do not lose it during transport.
Speaking of loss: I wanted to another USB Receiver Rapoo, so that I can operate separated keyboard and mouse. Unfortunately, there is no Rapoo Ersatzteilshop like Logitech. If you write to Rapoo (works only in English - Support not understand German), so you get the information that you turn the dealer should. So just in case, this means that you can throw away the keyboard + mouse in case of loss of the receiver, because buying a Rapoo USB receiver does not go individually.
Edit: the mouse responded no longer a few weeks ago. Have the product then exchanged in the E9070 (ie only keyboard).