Features: *Brand new and high quality. *Small compact size *It will be a good Options for you to keep your instrument in tune. *Classic clip design large LCD screen two-color backlight; *Tuning mode - 12 average rhythm guitar bass Yukriri violin; *The tuner does not contain batteries Specification: Pronunciation items: twelve average rhythm guitar bass violin Yukriri. A4 frequency: 440HZ Calibration error: ± 0.5 tone minute Color: Black Single Weight: 30g (approx.) Package Included: 3 x Tuner Note： Please refer to the measurement. Tiny measuring error is allowable in normal range. There might be a little color difference due to the monitor camera or other factors please refer to the physical ite.