This mechanical metronome is made of materials and is durable and can be used for a long time. A multi-functional professional mechanical metronome, light and portable, easy to use. For beginners, this is a good music accessory that can help you practice your rhythm and improve your musical skills. Features -Material: , metal and ABS. -Size: About 20.50X11.70X11.70cm/8.06X4.60X4.60inch. -The edges are smooth and round, without burrs, and will not damage the skin. -This mechanical metronome has fine workmanship and can effectively improve your musical skills. -It can be given as a gift to your friends who like music, they will definitely be very happy. -Suitable for various musical instruments, such as piano, guitar, drum, violin, zither, etc. -It can cultivate your sense of rhythm and make your performance more precise. Package list: 1 x metronome 1 x paper package