EXCELLENT QUALITY: Clear, loud sound for use when practicing piano, violin, guitar, bass, and other musical instruments;Master rhythm skills and improve your sense of beat and tempo by practicing with our mechanical metronome. | EASY CONTROL: 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 | ENVIRONMENTAL MECHANICAL METRONOMES: Uses a winding mechanism for power to produce metrical beats; No battery is needed; | MUSICIANS PARTNER: Helps play at a proper pace, provides a firm sense of rhythm, develops finger agility and preciseness; Accurate Musical Timing | SUITABLE FOR ALL MUSICIANS: a good accessories for beginners especially, click add-to-cart now and improve your musical skills today!