This Pedal is currently available.
Compact Always-On Chromatic Tuner
Compact Guitar and Bass Tuner Pedal with 21-segment LED Meter, Drop Tuning Support, and Guitar/Bass Mode
Boss TU-3S Chromatic Tuner$119.99
Boss TU-3S Chromatic Tuner$129.99
Boss TU-3S$110.39
Boss TU-3S$119.40
These merchants probably sell this module. Huh?
Boss TU-3S Chromatic Tuner
Boss TU-3S New Short version Chromatic