ITEM NAME:Portable Mini Mechanical Metronome Universal 11 cm Height for Piano Guitar A7L8 Portable Mini Mechanical Metronome Universal 11 cm Height for Piano Guitar A7L8 Portable to wear: mini-design of unique mechanical metronome, only 11cm in height, pocket size, very portable. Stability High: The metronome adopts the durable high-elastic nylon movement, which ensures a more stable working state, avoiding the gaps that ordinary metronomes are not accurate, once falls. Sweet sound: not hard at all. No bell rings. Special design: It has a liquidation mechanism and a pendulum and is enclosed in a plastic case with high impact. Its advantages: Metronome can help you train your concept on the speed of music, make your instrumental performance more complete and smooth, and make the rhythm more regular. How to use: (1) TO START: Wind the winding key in the direction of the arrow and push it towards the left of the pendulum. (2) TO REPLACE TEMPO: Move the sliding weight up and down and put its upper end on the dial. (3) AFTER USE: Slide the weight to the middle or upper part of the pendulum and put on the cover. Model: JX-V Specificites: For piano, guitar, violin, ukulele, chinese zither and other musical instruments Beats / per minute: 60 ~ 208 / per minute Item Size: 5 * 3.1 * 11 cm / 2 * 1.2 * 4.3 in Item Weight: 154 g / 5.4 onces Color: red brown Material: plastic + metal The pattern is random, can not be chosen. List of packages: 1 * Mini mechanical metronome Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.