The Qwik Tune QT11 Guitar and Bass Tuner was designed for simplicity, featuring an electronic pitchpipe that plays each guitar string's pitch. It's also a highly precise automatic tuner for guitar and bass. Ideal for the beginner, its Off Meter tuning tells you which string you're trying to tune and shows you whether you're flat or sharp. Its built-in high-sensitivity microphone and fast metering make this the affordable tuner for the Next Generation. Batteries included