1、This is a stringed instrument electric device integrating tuner and metronome functions, suitable for guitar, bass, ukulele, violin, banjo, etc. 2、This tuner is rechargeable and has a built-in lithium battery, so there is no need to worry about running out of power during use. 3、The tuner metronome has wide tuning range and fixing range, high accuracy, and meets the tuning needs of more musical instruments. 4、The color screen design can show the tuning status and beat more clearly, and the vibration pickup mode can help you get information faster. 5、The tuner clip is magnetically attracted, supports 360° rotation, and has an adjustment range of 120° front and rear, making it more flexible to use. 1 x Metronome Tuner1 x Clip1 x USB Cable1 x Chinese and English User Manual Item Type: Metronome TunerMaterial: ABSTuning Items: Guitar, bass, ukulele, violin, banjoPickup Mode: Vibration pickupTuning Range: 27.5Hz(A0)-4186Hz(c8)Tuning Accuracy: ±1 centA4 Benchmark: 430-450HzTuning Range: 1A-7ABeat Value: 0-9Beat Speed: 30-280bmpBattery Type: Rechargeable lithium battery (include)Battery Capacity: 120mAHCharging Voltage: 5VHow 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.