Features:- Professional instrument tuner mini clip-on digital tuner.- Widely used, suitable for tuning chromatic, guitar, bass, violin and ukulele.- Double color backlight lcd screen. The product's shell is made from pretty food-grade PC material.- In-tune: Indicator is on the middle, showing green. Low: Indicator is on the left, showing blue. High: Indicator is on the right, showing blue.- Portable digital clip-on style, easy to clip onto any stringed instrument as mentioned above.- Its clip part can be rotated 360 degree easily for positioning proper view angle of the lcd screen.- Super anti-interference. Sensitive and stable.- Turner picks up the sound by vibration.Model: AT-101Tuning Items: Chromatic(C), Guitar(G), Bass(B), Violin(V), Ukulele(U)Pitch Range: 440HzDetection Range: A0(27.5Hz)-C8(4186Hz)Tuning Way: Clip (tune by vibration)Detection Accuracy: ±0.5centPowered By: 1 * CR2332 BatteryPackage Include:1 x Tuner1 x CR2332 Battery1 x User Manual