Blue brings the calendar forward
The BBSF edition uses a clone Calibre 5134 with working day, date, month, leap-year and moonphase displays. Its 11.3mm case thickness and approximately 36-hour reserve preserve a slim calendar profile. The moon display follows a 31-day date cycle, so occasional correction is part of owning this version. The subdials are functional, but the calendar must be handled as this movement's own mechanism.
















