The Fishman Ft-2 Digital Chromatic Tuner Provides Quick And Accurate Tuning For Most Instruments With A Simple Flip. Clip It On, Flip Up The Display And The Ft-2 Powers-On. Flip It Back Down When You'Re Done Tuning Shut If Off. The Large, High-Contrast, Backlit Display Is Easy To Read And Shows Pitch With±1 Cent Accuracy Via Tuning “Needles” And A Multi-Color Backlight. It Is Also Incredibly Lightweight-Weighing Only 21 Grams-So It Won'T Affect Your Instrument'S Tone. When Flipped Down To The Off Position, It'S Incredibly Low-Profile, So You Can Leave It Place While You'Re Playing And The Soft Clip Won'T Harm Many Finishes.