Nux Loop Core Guitar Effect Pedal Looper 6 Hours Recording Time, 99 User Memories, Drum Patterns with Tap Tempo Record and overdub as many layers as you need;up to 6 hours recording time;mono or stereo recording 99 user memories;built-in drum patterns with tap tempo Change the playback tempo of your recorded phrases without changing the key Switching phrases without latency;Extensional pedal (optional) for more control Import and backup phrases with pc;runs on batteries and ac adaptor