... powful cost low, good quality and b 2.4G wireless optical MouseFirst ,the product descriptionThe 2.4G cordless products, transmission range of up ... before flashing, flashing time 2S.Note: Mouse in the work mode, if not detected, the receiver, Mouse will automatically turn off ... the receiver, Mouse will automatically return to work mode, if the excess 2 minutes have not yet detected, the receiver, Mouse ...