Brand Motospeed Model G350 Quantity 1 Color Black Material ABS Connection Method 2.4G Wireless Operation Distance Within 10m Tracking Method Optical Resolution 1000 dpi Supports System Windows 2000 / XP / Vista / 7 Power Supply 1 x AA battery (included) Other 2.4G wireless technology with bidirectional transmission; 360 degree freely control; Ultra low radiation design to protect your healthy; Perfect ergonomic design is more match your hands; 5000000 times of super longer life; 5-level smart energy saving mode. Packing List 1 x Mouse 1 x AA battery