SEIKO black model with metronome and tuner functions. - Brand: SEIKO - Model: STH200 - Functions: Metronome and tuner - Color: Black - Operation buttons: Tempo, beat, start/stop, and other buttons I bought this six months ago and am now selling it because I no longer use it. It makes a popping sound when turned on, but it works without any problems. Operation has been confirmed! Comes with the box and instruction manual. Uses one AAA battery *Batteries are not included There are some scratches, so please check them before purchasing. Please refrain from purchasing if you are sensitive to used items as this is a personal sale.