EH0390B Features 2.4GHz wireless air mouse， keyboard， remote control and game controller Built-in 6-axis sensor for 360-degree free operation Equipped with USB receiver， easy to install Works with PC and Android OS enabled set-top-box General Specs Brand & Model C120 Transmission Mode 2.4GHz Sensor 6-axis sensor Operating Range 10 meters Keyboard Function QWERTY keyboard Mouse Function Mouse with gyroscope sensor Standby Time 6 months Working Time 30 hours Battery Type Lithium battery Receiver USB 2.0 receiver System Requirement Windows， MAC OS， Android， Linux Package Details Weight: 104.86 g Size: 17.2*6*4.2 cm