Features:Tuner with high sensitivity, more accurate, precise, convenient and rapid.Adopt LCD display, show data clearly on the display, convenient for you to use.Tuning item: Chromatic(C), Guitar(G), Bass(B), Ukulele(U),Violin(V), Banjo(Bj), suit your different needs.The high quality rubber effectively protects the neck from scratching.If the tone is right, the green light will turn on, easy to use.Specifications:Condition: 100% Brand NewMaterial: Metal+PlasticWeight: Approx. 28g / 1.0ozSize: Approx. 4.5 * 2.8cm / 1.8 * 1.1inTuning Instruments: Chromatic(C), Guitar(G), Bass(B), Ukulele(U),Violin(V), Banjo(Bj)Flat: b, bb, bbbTuning Range: A0(27.5Hz)--C8(4186Hz)Tuning Mode: Automatically ClipTuning Accuracy: within 1 CentA4 Calibration: 430Hz--450HzPower Supply: 3V(1 * CR2032 Battery) (Not Included)Package list: 1 * Tuner1 * User ManualBattery is not included.