Brand LingDu Model L528 Quantity 1 Color Red + black Material ABS Connection Method Wireless Bluetooth Version No Connection Type USB Operation Distance 10m Tracking Method Optical Resolution 1600 dpi Power Supply 2 x AAA batteries (included) OS System Windows ME / 2000 / XP / Vista / Win 7 Other Cool design perfect for computer games; The surface is water transfer printing over lacquer fabrication processing; High grade personality and graceful; Hidden mini receiver; The best choice for computer games Packing List 1 x Mouse 1 x USB receiver 2 x AAA batteries 1 x Chinese user manual