Designed specifically for ukulele, the chromatic ukulele soundhole tuner remains perfectly concealed within the ukulele's soundhole for discreet tuning. The non-marring universal mounting clip allows stress-free installation, while the highly sensitive piezo transducer senses vibrations directly from the soundboard for fast and accurate tuning response. The bright, full-color display allows easy viewing in any environment. It's so small, convenient, and accurate, you'll want one for every ukulele you own!