wireless optical mouse(HN-BM04/1000DPI/bluetooth) Controlling distance >10m DPI default setting is 1000, ... the max is 1600 wireless optical mouse(HN-BM04/1000DPI/bluetooth)1.Standard 3 key + CPI switching function( default ... batteries 6.Size 82*52*32mm wireless optical mouse(HN-BM04/1000DPI/bluetooth)