This is a used item. It was used a few times in a studio. Operation has been confirmed. Everything included is shown in the photos. It runs on batteries, so I used it with batteries. An AC adapter is sold separately, so please prepare one yourself. A 4-track recorder capable of 32-bit float multitrack recording. - Model Name: R4 - Number of Tracks: 4 tracks - Recording Format: 32-bit float recording - Features: Dedicated bounce track - Brand: ZOOM Thank you for viewing.