Note:
<br />no backlit LED type: no charging. Power by 2 x AAA battery(the battery is not included).
<br />with backlit LED type: Built-in lithium battery
<br />Not bluetooth connection
<br />Perfect for PC windows2000/XP/Vista/CE/7),Linux(Debian-3.1 Redhat-9.0 Ubuntu-8.10 Fedora-7.0 testered),Pad, Xbox 360, PS3, HTPC/IPTV, etc. 
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<br />* Press  FN +F2 can change the backlit color.
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<br />* Product details URL:
<br />https://1drv.ms/b/s!Ago7smi35dIngjjSCdCu2mebsWGM
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<br />Features:
<br />* 3 in 1 multifunction: Wireless Keyboard + Mouse + Touchpad, RF 2.4G wireless connection(Not bluetooth connection), enjoy up to 10m operating distance.
<br />* Plug and play: no need to install software, with the USB Receiver at the back of the keyboard.
<br />* Mini QWERTY keyboard with multimedia control keys and PC gaming control keys.
<br />* Innovative shape, portable, elegant. Auto sleep and auto wake mode.
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<br />Specifications:
<br />* Operating Range: 10m(MAX)
<br />* Frequency range: 2.403GHz ~ 2.480GHz
<br />* Transmit Power: +5db Max
<br />* Operating Voltage: 3.3V
<br />* Operating Current: 50mA (on), 1mA (sleep mode)
<br />* Charging Voltage: 4.4V ~ 5.25V
<br />* Charging Current: <300mA
<br />* Item Size: 5.78" x 3.8" x 0.74"
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<br />Package includes:
<br />1 x Wireless Keyboard
<br />1 x USB Wireless Receiver
<br />1 x User Manual  
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<br />It works as a mouse, which converts your space movement in the air into an accurate displacement on the screen. 
<br />It works as a keyboard, which you can use to replace your usb keyboard. 
<br />It works as a remote, which you can program and learn some important keys from your TV remote.      
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<br />Remark:backlit type can be optioned with machine,standard type have not backlit.
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