2 In 1 Clip--Guitar tuner and capo 2 in 1 clip, is not only a professional capo, but also a professional tuner Prevent Tuner From Detecting Falsely--The clip can be used in an environment where there is a lot of noise interference in the school, which can prevent the tuner from detecting falsely Ensitive And Precise--The capo tuner is ensitive and precise, with good antiinterference ability and quick response Large LCD Screen--Equipped with a large and clear LCD screen, the guitar capo tuner is easy to read and use Suitable Uses--This clip clamps tightly and does not fall off easily. It is suitable for acoustic guitars, electric guitars, classical guitars and ukuleles Specification:Item Type: Guitar Capo Tuner Material: Zinc alloy + ABS Calibration Accuracy: 1 cent Battery Type: CR2032 button battery*1 (3V) (delivered with supporting battery) Battery Capacity: 240mAh Package List: 1 x Guitar Capo Tuner 1 x Button Battery 1 x Chinese and English User Manual