Current Production
GR-B300
CASIO GR-B300-1A
Casio does not publish a price for this reference on its own site.
Case size59 × 54.7 × 15.7 mm
Case materialBio-based Carbon / Bio-based resin / Stainless steel
CrystalMineral Glass
Water resistance200 m
MovementTough Solar
Bracelet or strapBio-based resin band
Specifications as published by Casio →
Last verified Aug 18, 2026