A clip-on chromatic tuner by Korg in a rainbow of colors (get it? CHROMATIC). Works quite will when clipped on the instrument scroll or peg, and has a WIDE mouth for gripping as it's primarily made for guitar. Also works for mandolin, ukulele, and other plucked instruments. These also work by just sitting on a stand, not clipped on the instrument. Nice bright lights, and good octave coverage.