Bullet Points:1, Accurate Music Time: The mechanical metronome is accurate in the time of the music. It increases the agility of your fingers and can be used by music lovers, beginners or musicians of any age or experience!2, Optional Beat: With our mechanical metronome, our pendulum can reach 40 to 208 beats per minute. The rhythm selection is 0 2 3 4 6. When you move the weight up and down on the pendulum bar, you can easily adjust the speed of your cadence and cadence. Play your favorite music accurately! After practicing with this metronome, achieve your musical goal!3, no battery: the item has no battery. An average wind speed of 20 minutes can increase practice time and reduce frustration. The steel gears can improve the durability.4, Easy to use: just tighten the mechanical metronome. You can select the desired rhythm and rhythm and move the pendulum. The metronome is perfect for providing loud sounds to help you master rhythm and rhythm as you play a variety of instruments.5, Pring mechanism: Our mechanical metronome uses a spring-loaded design that has the power needed to produce a regular rhythm. Features:1. Dust cover: keep clean, press, open the front cover, press, lock the cover.2. Rhythm adjustment: the accent lever can adjust the rhythm type.3. Metal Scale: Press the slider up and down to adjust the speed. To slow down, to fast.4. The product is powerful and easy to use for learning to play the piano. Specification:Color: Me