... powful cost low, good quality and b 2.4G wireless optical MouseFirst ,the product descriptionThe 2.4G cordless products, transmission range of ... will automatically return to work mode, if the excess 2 minutes have not yet detected, the receiver, Mouse into shutdown mode.General ... by the system f. After the shift by the system g. of the code by the system h. Mouse Wheel7. 2 LED lights, one for the ...