Brand RII Model I8 Quantity 1Piece Color Black Material TPU Compatible Models PC laptopHTPC network player X-BOX etc. Supported OS Windows 2000 XP CE Vista Windows7 Android (2.1 above) PS3 xbox36 MAC OS Linux (Debian 3.1 Redhat 9.0 Ubuntu 8.10 Fedora 7.0) Wired/Wireless Wireless Keys 92 Connection wireless Operating Range 10m Battery 300mAh Charging Time 4 hours Working Time 200-360 hours Standby Time 500-700 hours Features 2.4GHz wireless receiver working current: 3.3V PackingList 1 x Keyboard 1 x English manual 1 x USB cable (75cm) 1 x BL-4C battery 1 x USB receiver