1、HIGH PRECISE: Our tuner can accurately adjust the pitch of the string instrument, ensuring accurate and error free intonation during performance. 2、MULTI FUNCTIONAL: The tuner also has functions such as metronome, pitch detection, meeting the various needs of musicians. 3、EASY TO USE: With one key operation and a simple to understand interface, even beginners who are not familiar with musical instruments can easily get started. 4、STRONG COMPATIBILITY: This tuner is suitable for various string instruments and can meet the tuning requirements of different instruments. 5、STURDY MATERIAL: The clip on tuner is made of sturdy ABS material, ensuring strong durability and can be used for a long time. 1 x Digital Electronic Tuner1 x Button Battery Item Type: Digital Electronic TunerMaterial: ABSBattery Type: CR2032 Button Battery x 1 (Included)Battery Capacity: 240mAh