Technical specifications * Connection type Wireless * Connection interface USB * Amount of buttons 5 + scroll wheel * Sensor type Optical * Resolution 800/1200/1600 dpi * Minimum DPI 800 dpi * Maximum DPI 1600 dpi * Power supply 2 ? AAA * Color Red metallic * ROHS / CE Yes * Operation range 0?10 m * Operation frequency 2,4 GHz * Average duration of work without recharging / changing batteries 3-6 months * System requirements for PC Windows 2000/XP/Vista/7/8/10, Mac OS X10