3 in 1 metronome, digital tuner and tone generator for Guzheng.High-sensitivity vibration tuner responds fast, which ignores background noise, perfect for loud, chaotic environment.Clear LCD screen will give you visual effect.Clip-on Pickup & Built-in Microphone For Fine Tuning & EaseThe precise tuner with headphone , input and volume control and light indicator.Automatic shutdown function: 5 minutes without operation, the machine will automaticlly power off.Small and exquisite appearance, convenient to carry.Suitable as a gift for your , family or with others.Model: MT-70BFit: for chromatic; GuzhengFine tuning: +/- 1 CentA4 range: 430 ~ 450HZPower supply: 2 * AAA batteries (without included)Colour: blackMaterial: plasticPackage Contents:1 * Guzheng TunerOnly the above package content, other products are not included.Note: Light reflection 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.