This is a model from the G-Shock Mudmaster Series, designed for use in extreme environments scattered with rubble, dirt and debris, and uses carbon materials.
Model #: GGB100-1A9
Case size: 55.4 × 51.3 × 19.4 mm
Case and bezel material :Carbon / Resin
Construction: Shock / Mud resistant/ Carbon Core Guard structure
Water resistance:200 meter