BOSS DB-60 metronome with a variety of rhythm patterns. - Model Name: DB-60 - Brand Name: BOSS - Functions: Metronome, Timer, Switch - Pattern List: 8-beat, 16-beat, Shuffle, Funk, Dance, etc. - Button Color: Blue - Volume Adjustment: Yes - Headphone Jack: Yes The item has been tested and is in working order. However, this is a used item, so no guarantees are provided upon arrival. There are no noticeable stains or scratches. Everything in the images is included; there are no manuals or batteries. Thank you for viewing. Thank you.