Features: 1. 92 keys, 2.4GHz wireless Keyboard with Touchpad. 2. Touchpad DPI adjustable functions. 3. Built-in high sensitive smart touchpad with 360-degree flip design. 4. Mini QWERTY keyboard with multimedia control keys and PC gaming control keys. 5. Auto sleep and auto wake mode. 6. Innovative shape, protable, elegant. 7. The Ergonomically handheld design is easy to carry and operate. 8. Build-in removable rechargable Li-ion battery that has longer standby time. 9. Perfect for PC, Pad, Andriod TV Box, Google TV Box, Xbox360, PS3, HTPC/IPTV, etc. Specifications: Operating range: 15m(MAX), without signal disturbance and no direction limit Frequency range: 2.403GHZ ~ 2.480GHZ Operational voltage: 3.3V Charge Voltage: 4.4V ~ 5.25V Modulation: GFSK TX Power: Less than +5dBm Transmission rate: 1M bit/sec Frequency tolerance: +/-30ppm Power consumption: 55mA(on), 1mA(sleep) Battery Type: Built-in lithium-ion battery Item size: 145mm * 100mm * 20mm HID compatible device Terminal with USB port Windows Vista, Windows CE, Windows 7, Windows 8, Windows 10 Windows 2000, Windows XP Linux (Debian-3.1, Redhat-9.0, Ubuntu-8.10, Fedora-7.0 tested) Android OS (With standard USB interface)