How to Bluetooth Speaker: 1. Long touch"-" is for "Volume Down"short touch"-" is for last song. 2. Long touch"+" is for "Volume Up"short touch"+" is for nest song. 3. The function hand gesture recognition is implied to be offPress the "M" button for 3 secondsfunction of hand gesture recognition is "ON".It will be next song if your hand form left to rightin contrastit will be the last songOnce your hand from down to up stands for "Pause"When "Pause"your hand from down to up stands for "Play". 4. Keep press for ON/OFFShort press for Play or Pause when play musicAnswer or Hang up the calling when the calling in.