Feature 13in1 multifunction wireless keyboard (keyboard, touchpad, laser pen) is with 400mAh battery capacity. 2Using 2.4G radio technology with built-in backlight, wireless keyboard is easy to use. 3For QWERTY full-featured mini keyboard, you can switch whether the touchpad is used horizontally or vertically. 4And such a pocket keyboard supports system for Windows 2000 / XP / Vista / 7 / OS 10.x or lower / Linux . 5With 69 keys, supports USB interface, the charging time of this key board is 3.5-4h.SpecificationItem Type: KeyboardBuilt-in Battery Model: GRP6618055 lithium batteryBattery Capacity: 400mAhInterface: USBNumber of Keys: 69 keysCharging Time: 3.5-4hStandby: 500-700hSupport System: For Windows 2000 / XP / Vista / 7,For OS 10.x or lower,For Linux ( For Debian 3.1 / Redhat 9.0 / Ubuntu 8.10 / Fedora 7.0) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Keyboard1 x USB Receiver1 x USB Charging Cable1 x Instruction Manual