Features: 1.Accurate and Easy Tuning: This clip on guitar tuner is designed with with LCD screen for precise tuning of instruments, 360 degree rotating design offers great flexibility. 2.Wide Tuning Range: This digital electronic tuner supports wide tuning range from A0 (27.5Hz) to C8 (4186Hz), perfect for beginners and professionals alike. 3.Wide Application: This violin tuner is suitable for twelve equal temperament, guitar, bass, violin, C tuning ukulele, and D tuning ukulele tuning modes. 4.Convenient and Portable: This acoustic guitar tuner features clip on design, and compact and light weight design makes it easy to carry and use anywhere. 5.Long Battery Life: This clip on tuner is powered by a 3V CR2032 button battery (battery not included), providing long time usage without frequent replacements. specification:Item Type: Clip On Guitar Tuner Material: ABS Tuning Items: Twelve Equal Temperament, Guitar, Bass, Violin, Ukulele In C, Ukulele In D Tuning Range: A0(27.5Hz) to C8(4186.01Hz) A4 Range: 430Hz to 450Hz Battery Model: 3V CR2032 Button Battery x 1(Battery Not Included) PackageList:1 x ClipOn GuitarTuner 1 x User Manual