The Snark Clip-on Chromatic tuner is an essential, handy device for a guitarist or bassist to own. The Snark works on electric guitars, acoustic guitars, bass guitars, ukuleles, violins and more! - simply clip the Snark onto the headstock, and it picks up the vibration of each string as you pluck it. The screen lights up, showing you which note the string should be, and whether you need to sharpen it or flatten it. This compact, simple to use, and accurate tuner is an essential for any guitarist.