Case/bezel material: Carbon / Resin. Casio G-Shock Analog/Digital Beige Bio-based Resin Watch GA-010-5A / GA010-5A. Shock Resistant. Casio G-Shock Analog/Digital Black Bio-based Resin Watch GA-010-1A / GA010-1A.
Casio G-Shock Analog/Digital Red Resin Watch GA-2100-4A/ GA2100-4A
From G-SHOCK, the toughness watches that continue to evolve in search of ultimate strength, this model uses a carbon core guard structure. The case is made of fine resin containing carbon fiber that, although lightweight, exceeds the rigidity of normal resin.