For Electric Guitars, Acoustic Guitars, 12-String Guitars,, And String Winder. Product Features WORKS ON MOST 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! (Note: It does not tune bass guitars, 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 150+ 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) Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!