in 1 design: tuner, metronome and tone generator. The largest and unique colorful LCD display ensures easy viewing under any condition. Equipped with 360 degree rotary clip, it can be adjusted to perfect viewing angle. The clip opening is anti-slip, and able to clip onto the instrument stably. Sensitive and accurate tuning for chromatic, guitar, bass, ukulele and violin. Battery: 2 x AAA Batteries(not included) Tuning Range(HZ): A0(27.50Hz) - C8(4186.00Hz) Product Dimensions (L x W x H): 100x60x36MM/3.94x2.36x1.42Inches colour: black Material: plastic Package Contents: 1 x Guitar Tuner Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Please be kindly noted that the listed product is produced and distributed abroad and subject to the laws of its country of origin.