In the words of Boss:

Since the RC-20 Loop Station was first released in 2001, BOSS has led the way by continually releasing new looping products. Though theyve been used and enjoyed by various looping artists and performers, BOSS still pursued an easier and more affordable solution. The RC-1 is a straightforward looper that is easy to operate. Experience the fun of looping when you record, playback, overdub, and undo or redo loops using this compact BOSS stompbox. And of course, the RC-1 retains the BOSS quality and performance that musicians around the world have come to expect and rely on.