2.4GHz rapid wireless transmission with no delay and powerful interference resistance<br>Support multiple platforms including but not limited in PC， projector， smart TV， Android TV-box， TV-dongle， set-top boxed etc. <br>Operating distance up to 7 meters<br>Advanced power-saving technology with operating current less than 13mA<br>Low voltage indication， the LED will flash in 1 time / second to indicate the user to replace the battery<br>Any key pressing will wake it up from sleep status<br>Plug and play micro receiver， easy to operate