Brand LingDu Model L535 Quantity 1 Color 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 and conceptual design; perfect for computer games; The surface is water transfer printing over lacquer fabrication processing; High grade personality and graceful; Agilent A5090 chip more accurate positioning 5D button design; With 4 golden balance weight gadgets to adjust the weight more convenient to operate Packing List 1 x Mouse 1 x USB receiver 2 x AAA batteries 1 x Chinese user manual