Features: 1.Accurate and Easy Tuning: This clip on guitar tuner is designed with with LCD screen, which will ensure that your instrument is tuned to standard tones accurately and quickly. 2.Wide Tuning Range: This digital electronic tuner supports wide tuning range from A0 to C8. A4 ranges from 430Hz to 450Hz, perfect for beginners and professionals. 3.Wide Application: This violin tuner is suitable for twelve equal temperament, guitar, bass, violin, ukulele, etc. Inbuilt vibrating sensor makes it easier to cope with noisy environment. 4.Clip On Design: This acoustic guitar tuner features clip on design, a maximum range of clip openings, it fits almost any instrument. 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 Tuning Range: A0 to C8 A4 Range: 430Hz to 450Hz Battery Model: 3V CR2032 Button Battery x 1(Battery Not Included) PackageList:1 x ClipOnGuitarTuner 1 x User Manual