Bought this in hopes to work on my singing and vocal abilities and focus on harmonies. Very useful tool with plenty of options, but personally... the drive isn't there. I will just stick to instruments. Still New in Box My loss is your gain. Visually check your pitch in half-step increments Detects two singers simultaneously for two-part harmony training Onboard audio exercises with guide vocals and backing tracks Review function for instant playback to hear your performance REC IN jack (stereo mini) for recording songs and other lesson content Metronome with tap tempo Built-in tilt stand for desktop use Runs on two AA-size batteries (alkaline or Ni-MH rechargeable)