Built into a rugged BOSS stompbox chassis, this tuner delivers professional-grade accuracy with a 21-segment LED meter and High-Brightness mode for visibility even in bright outdoor conditions. Switch between Chromatic and Guitar/Bass modes to suit your instrument, and rely on the Accu-Pitch Sign function for precise visual tuning confirmation. The Note Name Indicator handles 7-string guitars and 6-string basses, while Flat-Tuning mode supports up to six half-steps down. Compact, durable, and trusted by players worldwide.