The Ernie Ball ProTune USB-C rechargeable clip-on tuner provides unmatched precision and versatility for guitarists and bassists. With five tuning modes and an easy-to-read color display, you can tune your instrument quickly and accurately. The rechargeable battery lets you tune for hours between charges, while the adjustable mount attaches securely to any headstock. For guitarists and bassists seeking a high-performance tuner, the ProTune USB-C clip-on tuner delivers.