Description Enhance your tuning experience with the Ernie Ball ProTune USB-C Clip-On Tuner. ProTune combines unparalleled accuracy with five tuning modes on a high-visibility colour display specifically engineered for musicians who demand precision and reliability. Embrace the convenience of a USB-C rechargeable battery for prolonged play and a versatile mount that promises perfect placement on most headstocks. USB-C Rechargeable ProTune makes it easy to keep your tuner powered up and ready for extended play sessions, while reducing waste from disposable batteries. 5 Unique Modes Precisely tune your instrument using chromatic, guitar, bass, violin, or ukulele modes, all on a high-visibility display. Versatile Mounting The spring-loaded clamp adjusts to fit most headstocks.