Cherub WMT-555C Electronic Digital Tuner and Tone Generator and Metronome with Pickup for Bass Guitar Violin Ukulele Suitable for chromatic, guitar, bass, violin and ukulele. Extra-large 2-color LCD display with backlight provides a better view.3 Indicator light gives a clear indication of different conditions.2 Selectable pickup modes, built-in microphone or clip-on pickup. Clip padded with soft rubber, thoughtful design to protect your instrument from scratches. Functions of playing sound and human voice. The bracket on the back can accommodate the tuner. You can adjust the volume and the use of the headphones. Auto shut off if no input signal or working within 5 minutes. Automatic saving of power off settings. Tuning, you can mention the indicator about them:Sharp: the backlit LCD display is orange, and the red # indicator light is up; Flat: the LCD display is orange and the red indicator light b up; In-tune: the LCD display is green, the green light indicator is up, and the tuner will make a sound of the same frequency. Specifications:Functions: Tuner/Metronome/Tone GeneratorTuning Elements: Chromatic, Guitar, Bass, Violin, UkuleleA4 Range: 430-450HzTuning Combal: b, bbTuning Range: A0 (27.5Hz)-C8 (4186Hz)Fine Tuning: +/- 1centReference Tone: C: 2A-6AG: 6E 5A 4D 3G 2B 1EB: LB 4E 3A 2D 1G HCV: 4G 3D 2A 1EU: 4G 3C 2E 1ATolate Tuning: Less Than 1%Time Range: 30-250bpmBeat: