WORKS ON ALL STRING INSTRUMENTS with a guitar machine head including electric, acoustic and classical guitars with nylon strings, 6, 7 and 12-string guitars, ukuleles, mandolins, banjos, lap steel guitars, bouzouki, mountain dulcimer, cigar box guitar, violins with planetary pegs, and many more! (Get Roadie Bass to tune bass guitars too). | 2x FASTER & EASY TO USE: automatically tunes your instrument in under 30 seconds with a motor speed 2x faster than Roadie 2. Simply place Roadie on the peg, pluck the string and watch it do the rest. ENHANCED TUNING ACCURACY & NOISE IMMUNITY with next-generation vibration detection, allowing you to tune even in noisy environments. | 100+ BUILT-IN ALTERNATE TUNINGS so you can easily switch between tunings or create your own custom tunings. CUSTOMIZABLE TUNING SETTINGS: change the A4 reference pitch, tune with a capo on, create custom tunings, change between “Fast Tuning” and “High Accuracy” & more. | BUILT-IN VIBRATION/BEEP METRONOME so that you can set the tempo and feel the beat while playing. RESTRING & TUNE IN ONE SINGLE STEP: changing strings is now a little less tedious. You can quickly wind your new strings and directly tune them to perfection in one go. | FULL COLOR, HIGH RESOLUTION, larger display screen. COMPACT DESIGN and ergonomic grip for a comfortable tuning process. LONG LASTING CHARGE: Roadie can last as long as 1 month on a single charge and is easily recharged with its USB-C cable (included in the box).