Korg DT7 Digital Guitar/Bass Tuner featuring Buzz Feiten Tuning Two tuning modes: chromatic (for tuning normally tuned instruments) or Buzz Feiten Large LED-type meter and seven-segment note display Wide tuning range [A0 (27.50 Hz) to B7 (3,951.07 Hz)] Compact, easy-to-view design Built-in mic allows use with acoustic guitars