Yamaha YAMAHA Easy-to-Use Cute Clip-On Electronic Metronome Blue ME55BE Reference Price: ¥2,750 ME-55BE Size/Weight Dimensions: Width 62mm, Height 44mm, Depth 17mm, Weight 30g • Clip-on type that can be attached to a music stand or clothing • Dial-type adjustment for easy volume control • Display/LED display: 1 point (red) • Sound source: Standard pitch A, B♭ (440Hz, 442Hz) • Power supply: CR2032 lithium battery x 1 (Battery life: approx. 50 hours) I am selling this because I haven't had much opportunity to use it. Operation confirmed. There are no accessories such as a box, but I think it can be used without any problems due to its simple functions.