Akai's Tune Lock chromatic tuner offers powerful calibration features and comes complete with a large seven segment LED display. It also has a built-in microphone allowing you to tune acoustic instruments.
The large footswitch allows the output to be muted be muted for silent tuning on stage or rehearsal and the unit automatically turns off after four minutes of inactivity, extending battery life.
In manual mode, the Tune Lock can manually calibrate the base pitch in increments from 437Hz to 446Hz. Depressing the calibration switch for more than two seconds switches the unit to standby for automatic calibration.
In auto mode, the Tune Lock automatically calibrates to a tone that is held for longer than two seconds.
Dimensions : 85mm (w) x 128mm (D) x 56mm (H)