1、Professional Grade Tuning Accuracy: Highly sensitive tuner with a metronome function, perfect for noisy environments and suitable for music teachers, professional and beginner players. 2、Versatile Tuning Options: 8 C standard pitches for string instruments including guitar, bass, ukulele, and violin. Tuning range from 27.5Hz to 4186.01Hz. 3、User Friendly Design: Featuring a clear LCD display for easy reading in all lighting conditions, our tuner is designed for effortless operation, catering to musicians of all levels. 4、Portable Convenience: Compact and lightweight, our clip on tuner fits easily in your pocket or instrument case, ensuring convenient tuning on the go, whether at rehearsals, gigs, or jam sessions. 5、Long Lasting Durability: Built with sturdy materials, our tuner guarantees reliable performance for countless tuning sessions, providing musicians with a robust and dependable tool for their musical endeavors. 1 x Guitar Tuner1 x Button Cell Battery1 x User Manual Item Type: Clip On TunerMaterial: PVC A4 Frequency: 440HzTuning Items: 12 Tone Equal Temperament, Guitar, Bass, Violin, ukulele C, ukulele D Tuning Range: 0A( 27.5Hz) to 8C( 4186.01Hz)Power Supply: 3V x 1 225mAh Button Battery CR2032 (with matching battery included)