1.2.4G mini wireless optical mouse 2.mini nano receiver 3.1 year warranty 4.OEM is welcomed 27MHz mini wireless mouse, computer accessories, nice business gifts2.4GHz USB Optical Wireless Mouse For PC/LaptopPackage Contents:Mouse, Nano-receiver , Battery, User documentaion,Warranty&quality assurance cards Advantage:1.Plug it in once and forget about it.It's so small it stays in your USB port so ...