Feature:1. Precise Movement: The metronome movement is made of high hardness plastic and metal, precise rhythm, stable performance and more durable.2. Function: Metronome has professional and complete adjustment functions, the adjustable beat range is 40 ‑ 208 bpm, and the selection of heavy bell tone is 0,2,3,4,6.3. Versatility: Universal mechanical metronomes are designed to work with a wide range of musical instruments such as piano, guitar, violin, and more.4. Easy to Use: Beginners and children can also easily use the mechanical metronome, which greatly improves the sense of rhythm.5. Convenient: Being mechanically operated, these metronomes don't require batteries or electricity, they function wherever and whenever you need them.Specification:Item Type: Mechanical MetronomeMaterial: ABS+ metalMethod:(1) Clockwise curtain slowly tighten the spring until mechanical resistance is felt; (2) Move the weight slider on the pendulum rod to adjust the metronome speed, and the degree corresponding to the upper edge of the weight block is the set speed; (3) Adjust the selection rod of the beat, select the beat; (4) Pull out the pendulum rod and lean slightly to the left or right.Precautions: (1) Place the metronome on a horizontal surface; (2) If the pendulum rod is not vertical when it stops, do not force it to return to the middle position, please wind up a little more, and then start; (3) After the metronome is used, please put the pendulum rod back on the top hook and close the lid; (4) Do not use or place the metronome in wet or dusty places, so as not to affect the function; (5) When cleaning the metronome, please use a dry, soft cloth to clean, do not use volatile chemicals, so as not to damage the metronome; (6) Do not disassemble metronome components, such as weight sliders, pendulum rods, etc..Package List:1 x Mechanical Metronome1 x Instruction Manual