Thank you for viewing! Immediate purchase is welcome. Please also check the condition in the images. This is a digital tuner/metronome, KORG TM-40. I have checked that it powers on with batteries inserted, and that each button works. I have not tested it with an instrument as I do not have one. Please understand this before purchasing. Size: Approximately 7.5cm (H) x 11cm (W) This is a used item, so please understand this before purchasing. The appearance has some scratches and paint peeling, but it is in good condition. I will ship it as soon as possible.