Feature: 1. This compact clip on tuner is suitable for halftone / guitar / bass / ukulele / violin. 2. Come with built-in battery, you can also easily connect and charge with the attached USB power cord. 3. High definition color screen is adopted to make the operation easier and clearer. 4. The clip-on tuner is very flexible to change angles to better read the information. 5. The product can be placed in front of or behind the instrument, both way will obtain excellent effect. Specification: Item Type: Guitar Clip-On Tuner Model: AT-102 Material: ABS + PMMA Suitable or Musical Instruments: 12 equal temperament, guitar, bass, violin, ukulele Pickup Range: A0-C8 Battery: 110mah lithium battery Power Supply: UCB DC5V A4 Frequency Range: 430-450hz Cent Display: ±50 Package List: 1 x Guitar Clip-On Tuner 1 x USB Cable 1 x User Manual