Features 1、【Universal Clip-On Tuner】: This electronic tuner is a versatile tool suitable for a variety of instruments, including those tuned to twelve-tone equal temperament, guitar, bass, violin, and ukulele. It's an essential tool for musicians of all levels, making tuning your instrument a breeze. 2、【Flexible Silicone Clip】: Equipped with a silicone clip that can be rotated to multiple angles, this tuner can be easily attached to your instrument. This feature allows for convenient viewing from any angle, making it easy to tune your instrument in any setting. 3、【Clear and Intuitive Display】: With a color backlight LED screen, this tuner provides a clear and intuitive display. You can easily see the tuning information at a glance, making it easier than ever to tune your instrument accurately. 4、【Easy to Use】: This clip-on tuner is designed for ease of use. Simply attach it to your instrument, turn it on, and you're ready to tune. The clear display and flexible clip make it easy to tune your instrument from any angle. 5、【Perfect for All Musicians】: Whether you're a beginner or a seasoned pro, this tuner is a must-have tool. Its universal design makes it suitable for a wide range of instruments, and its easy-to-use features make tuning your instrument quick and easy. Specification A4 Srequency: 440Hz Pronunciation Error: ± 0.5 minutes Battery: LIR2032 button battery (3.6V) Pronunciation Projects: Twelve-tone Equal Temperament, Guitar, Bass, Violin, Ukulele Product Size: 32 * 47 * 50mm/1.3 * 1.9 * 2inch Product Weight: 23g/0.8oz Attention: Can be replaced with a regular CR2032 battery. Do not charge the regular CR2032 battery when using it. Package List 1 * Tuner 1 * Charging Cable