The Gold Tone BGT electronic tuner works so well because it's optimized for the Bluegrass musician. Its sophisticated circuitry homes in on the fundamental note of each string plucked, tuning out spurious harmonic content for greatly increased speed and accuracy. The BGT's indicator needle unwaveringly indicates pitch, unlike the nervous indexes found in most other tuners. It provides settings for chromatic tuning and presets for five-string banjo, mandolin/violin and guitar. The BGT comes in a nice reusable tin for display or storage.