USB 2.0 | Bluetooth | Optical | Number of buttons 8 | Wireless range 10 m | Radio Frequence 2,4 GHz | Battery Lithium-Ion rechargeable | Included Accessories Unifying receiver,Micro-USB cable for recharging,User documentation | Colour Black | Dimensions 132.5x51.4x99.8 mm | Weight 0.256 kg