Mini SOS Looper Pedal Portable Guitar Effect Pedal/KOKKO/FLP2, not including power adapter

The maximum loop time is 5 minTo overdub over riff, single press the footswitch when play backing the loop. Now the led will turn from green to red, that means sos looper is in the recording status again and you are good to goPress and hold the footswitch longer than 1.5s To undo the last riffPress and hold the footswitch again longer than 1.5s, This will redo the loop that you just undoWhen led indicator lights off. It means there is no loop now in sos. You could start to build a new loop .in This status, footswitch is for true bypass