Brand Rii Model i9 Quantity 1 Piece Color White Material Stainless steel + plastic Compatible Models Android cellphones and tablets such as PC IPTV Google TV WEB TV Android TV Box Ipad Xbox 360 PS3 and Smart phone Supported OS Windows 2000 / XP / Vista / CE / 7' Linux(Debian-3.1 / Redhat-9.0 / Ubuntu-8.10 / Fedora-7.0 tested) Wired/Wireless Wireless Keys 84 Connection Bluetooth V3.0 + HS Operating Range 10 m Battery 500 mAh Charging Time 4~6h Working Time 200~360h Standby Time 500h Features Working voltage; 3.3V; Working current: Packing List 1 x Keyboard 1 x Mini USB cable (80cm) 1 x English user manual