1、This clip-on tuner has a small and exquisite appearance, is easy to carry, and has a 360-degree rotatable design to better meet your needs. 2、This guitar tuner indicates the adjustment status by displaying 3 colors (green, red and orange). 3、The portable guitar tuner can use clips, it is easy to fix on the instrument, convenient for you to use. 4、Automatic shutdown function, if there is no signal or operation within 3 minutes, the device will automatically shut down. 5、This tuner can be used in a wide range of applications, such as tuning guitar, chromatic, bass and ukulele 1 x Tuner1 x User Manual Item Type: Digital Guitar TunerTuning Items: 12 Average Rate, Guitar, Violin, Bass, UkulelePickup Range: A0 ( 27.5hz)-C8 ( 4186.00hz)Tuning Method: Clip the Tuner to the Instrument and Pick Up the Sound Through VibrationPickup Accuracy: + 0.5 CentsPower Supply: 1 x CR2032 Button Battery (not included)