Universal Compatibility: Designed for a wide range of string instruments including electric guitars, basses, violins, and ukuleles. Advanced Tuning Accuracy: Ensures your instrument is perfectly tuned using precise digital technology. 360-Degree Rotatable Clip: Flexible and easy to adjust, providing best angle for tuning. Portable and Easy to Use: Compact design fits easily in instrument cases and pockets, ideal for musicians . LCD liquid crystal display is clear and intuitive, long-lasting. Tuning items:12 equal temperament / ukulele / guitar / bass / violin Model:T-400 Tuning method:automatic tuning A4 Frequency:440Hz Power Supply:1x3V CR2032 Battery Tuning Accuracy:±0.5 cent Item Size:30x45x45mm Colour:As Shown Material:ABS Package Contents: 1 * Guitar Tuner 1 * English instruction manual Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.