AT-102 rechargeable clip-on tuner for chromatic/ guitar/ bass/ ukulele/ violin with built-in battery, is very suitable for long time use. Features: Compact clip-on tuner for chromatic/ guitar/ bass/ ukulele/ violin. With built-in rechargeable battery, can be charged via the included USB cable easily. Adopts high definition color screen to make operation easier and clear. Support users' setting memory function. Very flexible to change angles for better reading information. Can be place in front or on rear of the instrument. Specifications: Brand: AROMA Model: AT-102 Color: Black Tuning Items: Chromatic(C)/ Guitar(G)/ Bass(B)/ Ukulele(U)/ Violin(V) Detection Range: A0(27.5Hz)-C8(4186.00Hz) Tuning Mode: Clipping on instrument by picking up vibration only Pitch Range: 430Hz-450Hz Tuning Accuracy: ±0.5 cent Power Supply: Rechargeable built-in battery 3.7V/ 110mAH Item Weight: 28g / 1oz Package Size: 11 * 5.5 * 3cm / 4.3 * 2.2 * 1.2in Package Weight: 52g / 1.8oz Note: The guitar showed in the picture is not included. Please operating it at a suitable distance from radio, television and other electrical devices. Package List: 1 * Tuner 1 * USB Cable 1 * User Manual(English & Chinese)