Features:Built-in programmable smart touch padStandard QWERTY full-function mini keyboardBuilt-in rechargeable more staying power lithium-ion batteryHas power indicator， RF signal indicator， CAPSLOCK light， low-voltage indicator and keypad backlight to facilitate the use in dark environmentCompatible OS: Windows CE/2000/XP/Vista/7/8/Mac OS/Linux(Debian-3.1，Redhat-9.0 Ubuntu-8.10 Fedora-7.0 tested)/Android OS Specification:Model: KB168Weight: 185gOperate range: Up to 10 metersOperating voltage: 3.3VBattery type: Built-in lithium-ion batteryCharge voltage: 3.3VCharging current: <300mAOperating current: <50mASuitable temperature: -10��~+ 55�� INCLUDED:1 x 2.4G Mini Keyboard1 x Charging Cable1 x User Manual