Casotec Wireless Optical Mouse offers a precise, compact and versatile experience. With no wires to tie you down, the 2.4 GHz wireless with storable micro receiver works wherever you do -- at your home or office. It is Suitable for PC's or laptops and compatible with Windows 2000, XP, Vista, Linux, Win 7, Win 10 and MAC and all other latest versions. It shows its efficiency on any surface except glass. It requires 2 AAA Batteries (Batteries not included).