amazon publish Mugig Mechanical Metronome High Accuracy with Audible Click & Bell Ring for Piano / Guitar /Bass/ Drum/ Violin and Other Musical Instruments，Adjustable Tempo Range from 40 to 208bpm
- Eco-friendly Power: No battery is needed; Uses a winding mechanism for power to produce metrical beats.
- Effective Practice Tool: Master rhythm skills and improve your sense of beat and tempo by practicing with our mechanical metronome. Clear, loud sound for use when practicing piano, violin, guitar, bass, and other musical instruments
- Easy to Operate: Simply wind it up, select your desired beat and tempo and then set the pendulum in motion. Easily move the weight up and down the pendulum rod to adjust the speed. Tempo selection from 40 to 208 bpm
- Solid and Durable ：Heavy enough to stay stable on a given surface and won't tip over easily ,which can ignores the background noise .
- Accurate Musical Timing: Helps play at a proper pace, provides a firm sense of rhythm, develops finger agility and preciseness