The MooerGrooveLoop is the ultimate portable jamming companion with a built-in phrase looper and drum machine in a small size. Loop and drum machines are independent and can be used individually or simultaneously. When used at the same time, the looper will automatically sync to the drum groove or click to quontize the recording time. Mini size looper / drum machine pedal / 8 types, 2 drum grooves (16 grooves) built-in 3 working modes: LOOPER, DRUM and LOOPER+DRUM Looper and drum independently adjustable volume Equipped with tap tempo control GrooveLoop features a looper that allows you to record phrases over and over time. Loopers have four basic functions: RECORD, PLAYBACK, DUB and STOP. Looper can record up to 20 minutes. In DRUM mode, GrooveLoop is only used as a drum machine. Looper function is disabled. It is the mode that you use the drum machine and looper at the same time. Each control operates just like LOOPER mode.