2.4G Wireless Optical Mouse LD-308 -Model No: LD-308 -Origin: Guangdong -Number Of Buttons: 3 -DPI: 1600 -Connection Type: Wireless -Style: Laptop -Compatibility: Laptop 6D wireless mouse -Size: 114* 57* 22mm -Resolution: 400/ 800/ 1200/ 1600 DPI Option -Frequency: 2.4G -Work distance: 10M -Compatibility: WIN98/ ME/ 2000/ XP 1 Wireless Technology: 2.4GHz 2 Wireless distance: 10m 3 Mouse Size: 102( L) x67. ( W) x39( H) mm 4 Mouse weight: 49g( excluding battery ang receiver) 5 Keypad QTY: 4( including CPI key) 6 Key route: O. 8mm 7 Key force: 70± 5g 8 Key life: 3000, 000times 9 Rated voltage/ current: DC 3V/ 13mA 10 Power supply mode: 1AA batteries( No. 7 baterry) Recommend using alkaline batteries