Feature: 1. Product size is small and mini, come with accurate tuning, multi-color optional 2. Tune of guitar, bass, ukulele, violin, etc. can be adjustable with this product 3. Built-in high-sensitivity pickup, plus microcomputer chip, which bring excellent performance 4. Even in a noisy environment, it can be accurately tuned. Battery powered, easy to carry 5. Good‑quality ABS resin material, possess impact resistance, scratch resistance, environmental protection Specification: Item Type: Clip On Tuner Main Material: ABS resin Battery Model: CR2032 battery Number of Batteries: 1Pc Battery Capacity: 220mAH Does it Contain Batteries: Yes Package List: 1 x Clip On Tuner