... design.* The mouse can be used as wired optical mouse when in recharging, we suggest you choose the better rechargeable AAA batteries ... extension cable, put the receiver and tansmitter on one desktop, in this way, you may have higer working efficency* If you ... .30in Size(Receiver): 42x10x7 mm, or 1.65x0.39x0.28 in Length(USB Cable): 690mm, or 27.16in NetWeight: 97g, or ...