Features:92 keys, 2.4GHz wireless Keyboard with Touchpad. Touchpad DPI adjustable functions. Built-in high sensitive smart touchpad with 360-degree flip design. A new broken in classic Rii Mini i8+ new increased LED backlit function, you can us it in black with LED lighting QWERTY keyboard with multimedia control keys and PC gaming control keys. Auto sleep and auto wake mode. The Ergonomically handheld design is easy to carry and operate. Build-in removable rechargeable Li-ion battery that has longer standby time. Specification : Operating range: 15 meters(MAX), without signal disturbance and no direction limit. Frequency range: 2.403GHZ 2.480GHZOperational voltage: 3.3VCharge Voltage: 4.4V 5.25VModulation: GFSK Layout : US Channel: 78 channels TX Power: less than +5dBmTransmission rate: 1M bit/sec Frequency tolerance: +/-30ppmPower consumption: 55mA(on), 1mA(sleep)Battery Type: Built-in lithium-ion battery Notice : After 3 minutes without any operating will into sleep mode, press any key about 1s to wake up. Package Including:1 Wireless keyboard1 Wireless receiver1 Charging data cable1 User manual Note: If your device without USB 2.0 jack, you need buy one.