Cherub Chromatic Tuner WST-640C+

Groundbreaking clip-on Chromatic tuner, No buttons! Simply flip tuner up to turn on and push down for off. 3 color backlit LCD display- yellow, flat; green, in tune; red, sharp. Built-in piezo sensor for accurate tuning experience. Auto tuning range A0 to C8. Runs on CR2032 battery, auto Power-off.