~The autotuner boasts high speed, high accuracy, and excellent durability, evolving into its fourth generation~ *Bass tuning is not supported. Roadie4's advanced tuning technology ensures consistently accurate tuning in seconds. It directly detects string vibrations, so ambient noise won't get in the way, even in noisy environments. Seamlessly switch between over 150 tunings, from open to custom tunings, and discover new sounds with just a few taps. Create custom tunings and instrument profiles, tune with a capo, adjust reference pitch, and seamlessly sync with the dedicated Roadie Tuner App. The metronome function keeps you in perfect rhythm while practicing or performing. A powerful motor smoothly winds and unwinds the strings, making string changes a breeze. Improvements from Roadie 3 include an expanded display for improved visibility, the addition of a scroll wheel for smoother up and down operation, and an updated size and grip that makes it easier to hold. Other small improvements have made tuning even more comfortable. ■Roadie Tuner App The free Roadie Tuner App allows you to customize your tuning, access additional features, and keep your Roadie 4 up to date. - Create, manage and save instrument profiles - Create custom instruments (e.g. dulcimer, santur, etc.) - Create custom tunings - Download new tunings from the library - Advanced tuning settings (change reference pitch, use capo, change desired frequency in cents, etc.) - Beep and vibration function ON/OFF・Installing firmware updates etc. *The Auto Detect function will be implemented in a future software update. *Product specifications are subject to change without notice.Rotation speed: 110 RPM Maximum compatible gauge: .075 *Not compatible with bass tuning. Detectable frequency band: 27.5 to 668.84 Hz Operating temperature: 0~40℃ Built-in battery: Rechargeable lithium-ion polymer battery 800 mAh / USB type-C Dimensions: 10.9 x 5.6 x 3.1 (cm) Weight: 156g