New, Unused Sonic Research ST-300 Mini Stompbox Strobe Tuner Turbo Tuner Strobe Tuner I never used it after purchasing it! It's a new, unused item! *There is some damage to the outer box due to shipping (see images). The Turbo Tuner ST-300 Mini is a more compact version of the Turbo Tuner ST-200, which has been very popular since its release for its accuracy and responsiveness. It boasts an accuracy of ±0.02 cents. In addition to chromatic modes for guitar/bass, it also supports alternate tunings, and original settings can be registered. It is also equipped with a USB port for easy customization. ・True bypass specification ・Automatically mutes the amplifier output when On ・High-brightness LED strobe display ・Use with an AC adapter (※Batteries are not included) ・Automatically detects input pitch instantly ・Zero-latency full strobe display ・Easy-to-see roulette-style display even from a distance ・Chromatic/Guitar/Bass modes ・Supports drop tuning up to 3 tones (6 semitones) ・User's original tunings can be registered up to 5 patterns ・Wide measurement range from C0 (16.35 Hz) to C8 (4,186.0 Hz) ・A4 (reference tone) can be set in 0.1 Hz increments within the range of 300.0 to 599.9 Hz ・Open tuning/original tuning can be programmed in 0.1 cent increments for each string ・Size: W40 x D95 x H47mm