The BOSS TU-01 Clip-On Chromatic Tuner is designed for guitar, bass, and ukulele players who need a reliable and easy-to-use tuning solution. It is the most affordable tuner in the trusted BOSS lineup, featuring a small and durable design that can conveniently attach to your instrument’s headstock. The tuner provides a bright, attractive display with a digital meter and note indicator, along with two lights that indicate when you are perfectly in tune. With a convenient reference pitch function (A=440Hz) and a battery life of up to 25 continuous hours using a CR2032 lithium battery, this tuner is perfect for both beginners and experienced musicians. Its adjustable viewing angles and foldable design make it easy to carry in your case or gig bag for on-the-go tuning.