A single charge of the GTA4500 Rechargeable Clip-On Tuner allows for five-and-a-half hours of tuning ability from the included USB cable. No need for cables or amps, the clip-on tuner picks up vibrations even in a noisy environment. This tuner will not damage the instrument's finish and can remain attached during a performance or practice session.
With five and a half hour battery life, 360 degree rotatable clip and four color display, the rechargeable GTA4500 sets a new standard for guitar-tuning precision and convenience. Accurate within plus/minus .5 cents, the GTA4500 features chromatic, guitar, bass, ukulele, and violin tuning modes, A0 (27.5 Hz) - C8 (4186.0 Hz) detection range and 410Hz - 450Hz pitch range -- all in a compact 1.3" x 1.2" x 3.7" unit with included 3.7V/110mAH power supply.