CK343B 4 in 1 comb: keyboard， touchpad， mouse， laser pointer and 2.4GHZ receiver. Qwerty full functional keyboard. Specific multi-media remote control. With a real notebook touchpad. To enjoy PC multi-media entertainment at home. To share large TV and projector screen. Large PAD for handwrite. Built-in lecture laser pointer. Adds F1-F8 functional keys. 69 backlit keys. Computer system required: Windows 2000/XP/Vista/7 Mac OS 10.x or lower Linux/Redhat 9.0/Ubuntu 8.10/Fedora 7.0. Suitable for meetings， training， speeches， UPMC， tablet PCs， Google TVs， projectors， HTPCs， etc. Suitable for the iPads and smart phones. Working Voltage: 3.3V. Working Current: <80mA. Charging Time: 3.5-4H. Charging Voltage: 4.2-5.05V. Charging Current: <300mA. Built-in rechargeable lithium battery. Powered via USB cable (included). Standby time: 500-700H. Working Temperature: -10℃-+55℃. Transmission Distance: 7m. Package Details Weight: 256.80 g Size: 18.5*9*4 cm Package Includes 1 × Keyboard Combo 1 × USB Cable 1 × User Manual