Function: 1. Enjoy your favorite music! - This mechanical metronome helps to develop and maintain rhythm, play accurately and increase musical awareness. 2. Applies to most musical instruments-by practicing piano, violin, guitar, bass, drums and other instruments, make the rhyme more accurate. 3. Amazing features - sound clicks and ringtones to maintain rhythm while reading sheet music winding mechanism to generate rhythm without batteries speed range: 40-208 beats per minute rhythm selection: 0,2,3,4,6. 4. Even for children and beginners, it is easy to use-remove the brake, lower the cover, adjust the rhythm and rhythm, then use it the average single total wind (2160 clicks) lasts at least 18 minutes, depending on the rhythm. 5. Red wood or shallow wood in color, wood-like design, exquisite and beautiful. Specification: Characteristics: Enjoy your favorite music! - This mechanical metronome helps to develop and maintain rhythm, play accurately and increase musical awareness. Applies to most musical instruments - When practicing piano, violin, guitar, bass, drums and other instruments, improve rhyme. Amazing features - sound clicks and ringtones to maintain rhythm while reading sheet music winding mechanism to generate rhythm without batteries speed range: 40-208 beats per minute rhythm selection: 0,2,3,4,6. Even for children and beginners, it is easy to use - remove the brake, lower the cover, adjust the rhythm and rhythm, and then use it the average single total wind (2160 clicks) lasts at least 18 minutes, depending on the rhythm. Red wood or shallow wood in color, wood-like design, exquisite and beautiful. Specification: Color: red wood or shallow wood (optional) Speed Range: 40208bmp Rhythm Selection: 0,2,3,4,6 Package List: 1x metronome 1 x User Manual