Specification: Item Type: Metronome Tuner Material: ABS Tuning Items: Guitar, bass, ukulele, violin, banjo Pickup Mode: Vibration pickup Tuning Range: 27.5Hz(A0)-4186Hz(c8) Tuning Accuracy: 1 cent A4 Benchmark: 430-450Hz Tuning Range: 1A-7A Beat Value: 0-9 Beat Speed: 30-280bmp Battery Type: Rechargeable lithium battery (include) Battery Capacity: 120mAH Charging Voltage: 5V How to Use: 1. Long press the power button to turn on/off; if there is no signal input or other operations for 3 minutes, it will enter the power saving mode or automatically shut down. 2. In the power-on state, long press the "M/T" key to switch between tuner mode and metronome mode. 3. When the display state is the metronome mode, short press the "M/T" key to change the Beat value; short press the "/b" key to change the rhythm type; short press the "" key and "" key to select the speed value; Short press the power button to pause or start the beat. Long press the "/b" key to change the volume of the metronome. 4. When the display status is the tuner mode, short press the "M/T" key to switch the tuning items, and lightly press the "/b" key to set the number of semitone tunings (only for guitar and bass instruments) Under the sound). Tap the "" key and "" key to change the A4 benchmark, and long-press the key to switch quickly. Package List: 1 x Metronome Tuner 1 x Clip 1 x USB Cable 1 x Chinese and English User Manual