Effective practice tool: Master rhythm skills and improve your sense of tempo and rhythm by practicing with our mechanical metronome. Clear and loud sound for practicing piano, violin, guitar, bass, drums and other musical instruments Precise musical timer: help play at an appropriate rhythm, give a sense of rhythm, develop finger agility and precision, show a visual sense of pendulum timing Easy to use: just wind it up, select your desired time and tempo, then set the pendulum in motion. Easily move the weight up and down the pendulum rod to adjust the speed. Tempo selection: 40-208 bpmSpeed: 40-208 beats/min Ecological power: No batteries are needed; Use a winding mechanism to produce metrical beats. The beat selection is: 0, 2, 3, 4, 6 Classic design: Traditional square-shaped metronome with bell in durable plastic case in teak color with a transparent protective cover, portable and safe for carrying Size: 198*93*117mm Color:Black Delivery quantity:1 piece