1、Quick Response: This tuner quickly senses the vibrational frequencies of music produced by different instruments, responding very quickly. 2、Adjustable Angle: The 360 degree swivel clip design of this tuner allows you to adjust the desired angle for better and more convenient use. 3、Accurate Tuning: The tuning of the tuner is precise and fast, and it can bring you the best music experience ever. 4、ABS Housing: The ABS shell of the tuner is very light and wear resistant, which is convenient for you to carry out and use outdoors. 5、Applicable Types: This tuner is designed for acoustic, chromatic and electric guitars, bass, ukulele, banjo, violin, and stringed instruments. 1 x Guitar Tuner1 x Instruction Item Type: Guitar TunerMaterial: ABSBattery Required for the Product: 1 x button cell CR2032 (excluded)Tuning Items: Twelve well tempered, guitar, bass, violin, ukulele.A4 Frequency: 440HZTuning Error: ± 0.5 cents