The Casio G-Shock GM-2100M-1A is a men's analog-digital watch that embodies a monochromatic, modern industrial aesthetic, emphasizing simplicity and functionality. It is part of a collection that includes the digital GM-5600 and the analog-digital GM-2100, all presented in achromatic color schemes.

• Shock-resistant construction
• Metal bezel with a textured pattern
• Achromatic color scheme
• Red accent on the function label, symbolizing G-SHOCK's dedication to toughness
• Bezel features openings that allow the center case to be visible