Tuning item: Chromatic, Guitar, Violin, Ukulele, Bass Pitch Range: 440Hz Detection Range: A0(27.5Hz)- C8(4086.00Hz) Tuning way: Clip(tune by bibration) Detection Accuracy: +/- 0.5 cent Power supply : ONe 2032 coin battery dimensions: 80mmx48mmx27mm Weight 23grams switch off automatically if no signal for 3 mins Please Avoid use in Direct sunlight, extreme temperature or humidity, excessie dust, dirt or Vibration or close to magnetic fields. Brand Grape SKU 100848441_NP-1021370560 Model GD-JA20