Brand Geyes Model 340e Quantity 1 Color White Material Plastic Connection Method Bluetooth Bluetooth Version 3.0 Operation Distance 10m Tracking Method Optical Resolution 1600 dpi Power Supply 2 x AAA batteries (included) Supports System Windows 2000/XP/Vista/7 Other With 4 buttons of which one is for DPI switching; Track scanning frequency: 7080 fs/s; Ergonomic design with multimedia short key; 6.4mps graphics capability; 20g max. acceleration; 45inch/s max. moving speed; Perfect for playing computer games. Packing List 1 x Mouse 2 x AAA batteries