Mechanical metronome, high precision, classic shape, natural color, with free cleaning cloth and music clipLimited quantityWorks with Most Instruments - Creates a rhythm at just the right speed when practicing piano, violin, guitar, bass, drums, and other instruments.Practical functions: suitable sound, you can always hear the crisp beat sound when playing the instrument; the shell is resistant to falls; click and make a sound when playing the musical score to keep the beat; the winding mechanism can generate metric beats without batteries; speed range: 40-208 bpm; rhythm options: 0, 2, 3, 4, 6.The mechanical metronome is louder than the digital metronome and the sound cannot be adjusted. The goal is to better strengthen the rhythm of practitioners, please understand this before choosing to place an order in order to avoid an unpleasant shopping experience.