Features:1.Clip and lanyard hole design, easy and convenient to carry and fix.2.The product is designed with 3.5mm channel headphone jack.3.Use this metronome to mark time by the means of regularly recurring ticks or flashes at adjustable intervals.4.Tap function enables you to test your ideal tempo or tempo of a track.5.Adjustable volume control: Max/medium/min/mute. Multi-functional, can be used for all types of instruments.Specifications:Condition: 100% Brand NewMaterial: PlasticHeadphone Jack Diameter: Approx. 3.5mm/0.14inWeight: Approx. 30g Size: Approx. 6 * 3.5*1.5cm / 2.4 * 1.4*0.6inColor: BlackTempo: 30 to 280 BPMBeat Value: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9Volume Adjustment: Maximum Volume; Medium Volume; Minimum Volume; MuteAccuracy: 1/1000Power Supply: 1 * 3V CR2032 Cell Battery(Not included)Package list: 1 * Metronome 1 * User Manual