Musedo MT-70B Tuner with Clip-on Pickup & Built-in 3-in-1 Electronic Microphone LCD Tuner Metronome Tone Generator for Guzheng3-in-1 Metronome, Digital Tuner & Tone Generator for Guzheng.The high-sensitivity vibration tuner responds quickly, which ignores background noise, perfect for a noisy, chaotic environment. Clear LCD screen gives you a perfect visual effect. Clip-on Pickup & Built-in Microphone for Precise Tuning & EasePrecision Tuner with Headphone Plug, Input Jack & Volume Control & Warning Light. Auto shut-off function: 5 minutes non-working, the machine will automatically shut down. Small and exquisite appearance, convenient to carry. Suitable as a gift for friends, family or with others. Model: MT-70BDeaching: for chromatic; Guzheng Precision Tuning: +/-1 CentA4 Range: 430 450HZ Power Supply: 2 * AAA Batteries (Without Set)Color: BlackMaterial: PlasticPackage Content:1 * Guzheng Tuner 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 error is +/- 1-3cm.