Professional Metronome Mechanical Movement Quick Adjustment Rust-proof Violin Guitar Universal Metronome for BeginnersDescription:Without batteries needed, the metronome adopts a wind-up spring mechanism and its pendulum can deliver 40 to 200 beats per minute. Metal spring knob and fine workmanship makes the metronome rust-proof, comfortable to touch, and not easy to break. Designed with loud mechanical sound and visual rhythm indicator, the metronome contributes to the development of rhythm, maintaining the tempo, playing music accurately and enhancing your musical feeling. Meanwhile, it is also a great decorative accessory for your instrument because of its bright color, unique shape, and charmingly elegant appearance. Made of high-quality ABS and metal, it is durable enough for long-term use. The length of the product is 3.5cm, width is 7cm, and height is 15cm. Suitable for zither, piano, guitar, violin, drums and other instruments. Item Name: Metronome Material: Metal,ABS Color: Yellow Features: Rhythmic, Mechanical, Accurate Practice Size Details:15cm x 7cm x 3.5cm/5.91" x 2.76" x 1.38" (Approx.) Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included:1 x Metronome