1. Improve Your Rhythm and Tempo. Provide a highquality and elegant metronome. The adjustable beat, tempo and high tempo tolerance keep you on track to playing your music correctly. The metronome is great for any skill level, including beginners. It's great for piano, guitar, violin, ukulele practicing, and useful for practice lessons and exercises at home. 2. No Battery Needed, . The metronome is stylish tower shape and must be used on a level surface. Our mechanical metronome is a windup spring mechanism, no battery needed. It is great for providing a loud sound to aid you in keeping track of beats and tempo when practicing with various musical instruments. 3. Large Selection of Beats. The pendulum of our metronome can make 40 to 208 beats per minute. The beat selection is 0, 2, 3, 4, 6, and the tolerance is less than 1%. You can easily adjust the speed of the beat and tempo when you move the weight up and down the pendulum rod. 4. High quality and portable. The unique mechanical metronome adopts a durable copper gear movement. It has a windup mechanism and a swinging pendulum and is enclosed in a highimpact plastic case. Please note that if the pendulum stops not vertically, do not force it to to the center position.