Btuty Mini Mechanical Metronome Universal Metronome Portable 11cm Height for Piano Guitar Violin Ukulele Chinese Zither Music Instrument mechanical metronome

Operating Instruction: (1)TO START: Wind up the winding key in the direction of the arrow mark and push the pendulum leftward. (2)TO SET TEMPO: Move the sliding weight up and down and set its upper end on the dial. (3)AFTER USING: Slide the weight to the middle or upper part of the pendulum and put on the cover.Specifications: Model: JX-V Material: Plastic and metal Suitability: For piano, guitar, violin, ukulele, Chinese zither and other music instruments per minute: 60~208/per minute Item Size: 5 * 3.1 * 11cm / 2 * 1.2 * 4.3in Item Weight: 154g / 5.4oz Package Size: 6 * 4 * 11.8cm / 2.4 * 1.6 * 4.6in Package Weight: 175g / 6.2ozPackage List: 1 * Mini Mechanical Metronome