This item is amechanicalmetronome, adoption of premium material. You can master rhythm skills and improve your sense of beat and tempo by practicing with our mechanical metronome. It& 39;s simple to operate, easy to use. Features -Material:Metal, ABS -Size:11.00X5.10X3.00cm/4.32X2.00X1.18in - Adoption of premium material, strong and durable for long-term use. - Suitable for a variety of musical instruments, such as piano, guitar, drum, violin, zither, etc. - Small size, light and portable, easy to carry and easy to store. - Simple and easy to use. You only need to turn the clockwise of the mechanicalmetronome clockwise, and place it on a flat surface after it is full. - Good accessories for beginners especially, take it now and improve your musical skills today.