Tuner On Guitar Clip-On Tuner for Guitars, Ukulele, Bass, Violin, Chromatic, 360 Degree Rotating, Electric & Acoustic, Fast & Accurate, Easy to Use, Auto Power Off, Battery Included. MULTIPLE TUNING MODES: Chromatic, Guitar, Bass Ukulele & Violin. You may also tune Mandolin and Banjo when selecting the Chromatic mode. EASY AND INTUITIVE TO USE. Simply clip on and get tuned in a second. Excellent battery capacity; comes with battery included. Solid will not break easily. Turn 360 degrees. Small. Energy-saving function. Calibration 440Hz. Standard tuning. Drop tuning. Use it with a capo too. FAST & ACCURATE: Highly rated by music teachers, professional and beginning players, this tuner is appreciated for its speed, simplicity and accuracy. EXCELLENT VISIBILITY. Clear 3-Color LCD digital display with a good backlight making it easy to read. 3-YEAR MANUFACTURER GUARANTEE: If you experience any technical problems with the tuner for full 3-year after purchase, please contact us and we will replace it or make a refund.