TUNE IT OR DIE: A combination Strobe and Chromatic tuner in a stomp box format. Tuner remembers last tuner mode and stays there until switched. Dual outputs allow for through and mute capabilities. Also equipped with calibration and choose note features and sports the largest segment LED display on a floor tuner. Road worthy die cast housing with easy access battery door. Powers from one 9V battery or optional 9V adapter. Two-year warranty.