- Touchpad DPI adjustable function<br />- Touch pad 90 degree rotation、 horizontal & vertical both easy to use<br />- Scroll wheel function<br />- 27-LED backlight<br />- 79 keys<br />- Operating range: 30 meters<br />- Transmission rate: 4dBm<br />- Built-in 810mAh 3.7V rechargeable battery<br />- Working voltage: 3.3V<br />- Working current: < 50mA<br />- Charging voltage: 4.2~5.05V<br />- Charging current: < 300mA<br />- Supports Windows 2000/XP/CE/Vista/7、 Android OS (2.1 or above)、 PS3、 XBox 360、  <br />Mac OS & Linux<br />- Comes with USB cable & English manual<br /><br />                                                                                                                                Dimensions: 5.91 in x 2.40 in x 0.43 in (15.0 cm x 6.1 cm x 1.1 cm)<br />Weight: 3.14 oz (89 g)<br /><br />