The HOOK Drum & Loop (NDL-3) is a mini looper pedal with auto tempo detection. Simply record a phrase loop, then add a synchronized drum beat. Or you can use the included Smart Tap Tempo and play the drum beat, then start to record the phrase loop. The HOOK is intelligent and simple to operate.When recording your phrase loop, you can choose Normal Recording or Auto Recording. Normal Recording (NR) is like regular looper pedal, while you press the footswitch, it starts to record immediately.