Model UKB-500-RF Quantity 1 Color White + black Material ABS Key Numbers 92 Connection Method 2.4G Wireless Power Supply Rechargeable battery Battery Capacity 800mAh Multi-media Key Up left: last / next music stop mute voice volume; Up right: four direction key and confirmation key; Up left round keys: players mail box mute mouse left (from up to down); Up right round keys: search my computer browser homepage mouse right (from up to down); Press FN and slide scroll bar on touch screen at the same time can review page; Press FN and press space key at the same time can adjust mouse speed Supports System Windows 2000/XP/Vista/7 Other Features Left and right mouse design convenient to operate; Rechargeable Nokia BL-4C lithium battery can be replaced; Great hand feeling; Portable environmental friendly safe and durable; Operation distance: 10m; Working voltage: 3.3V; Working current: <50mA; Charging current: <300mA; Charging time: 2h; Working time: 10 days; Standby time: 15 days Packing List 1 x Keyboard 1 x Cable (75cm) 1 x Battery 1 x Receiver 1 x English user manual