COMPACT AND EASY-TO-USE CLIP-ON IDEAL FOR GUITAR, BASS, AND UKULELE, THE CLIP-ON TU-01 IS THE MOST AFFORDABLE TUNER IN THE TRUSTED BOSS LINEUP. SMALL, DURABLE, AND SIMPLE TO USE, IT PROVIDES CONVENIENT, RELIABLE TUNING RIGHT ON YOUR INSTRUMENT'S HEADSTOCK. A BRIGHT, ATTRACTIVE DISPLAY FEATURES A COOL DIGITAL METER AND NOTE INDICATOR, PLUS TWO LIGHTS THAT SHOW WHEN YOU'RE PERFECTLY IN TUNE. THE TU-01 ALSO ADJUSTS FOR DIFFERENT VIEWING ANGLES AND FOLDS DOWN FOR EASY TRANSPORT IN YOUR CASE OR GIG BAG.