The Boss TU-3 Chromatic Tuner is housed in a tank-tough BOSS stompbox body, featuring a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare.

The Boss TU3 allows you to choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. The TU-3 incorporates a convenient Note Name Indicator that can display notes of 7-string guitars and 6-string basses, while the Flat-Tuning mode can support up to six half-steps.

The Boss TU-3 Chromatic Tuner Main Features Include:

21-segment LED meter with brightness control
High-Brightness mode enhances meter visibility outdoors
Accu-Pitch Sign function provides visual verification when tuning is complete
Chromatic and Guitar/Bass mode (tune by string number, with support for 7-string guitars and 6-string basses)
Flat tuning is supported with Guitar Flat mode, which allows for tunings up to six semitones below standard pitch
Tuner automatically mutes when the tuner is on
Supplies power for up to 7 BOSS compact effect pedals
Dimensions (WxDxH): 73 mm (2-7/8 inches) x 129 mm (5-1/8 inches) x 59 mm (2-3/8 inches)
Weight: 390 g (0 lbs. 14 oz.)