GRANPRO Guitar Compatible with and Violin on my best Clip-on Tuner, Bass, Ukulele, [Featured #1 list!] (Beetle)

Palm-sized: Easy to attach with a clip! Fits in your pocket or guitar case. Two-color display: When you're in tune, the color changes from blue to green. The backlight makes it perfect for dark stages. [Compatible with a wide variety of instruments] Compatible with a wide range of instruments including guitar, bass, ukulele, violin, and chromatic. This all-in-one tuner is recommended for everyone. Wide range of motion: Wide range of adjustments possible both vertically and horizontally, allowing for quick and stress-free tuning. [Fixed at 440Hz] The hertz is fixed at the international standard of 440Hz. Please be aware that if you need to tune to 441Hz, 442Hz, 443Hz, etc. for violin or orchestral use, please be careful. It's a guitar tuner.