Casio G-Shock GA-2100-1A4ER Men's Watch • Carbon Core Guard • Iconic Octagon Design

The Casio G-Shock GA-2100-1A4ER men's watch sets new standards in terms of robustness and style. Thanks to the innovative Carbon Core Guard structure, this wristwatch is extremely resistant to shocks and impacts, yet remains surprisingly flat and light on the wrist.

The striking black case is complemented by luminous neon-orange accents on the dial, giving the watch a modern, urban look. With water resistance up to 20 bar, it is the ideal companion for every situation – from sporting adventures to everyday use in the city.

Special features of the Casio GA-2100-1A4ER

• Carbon Core Guard structure offers maximum protection through a carbon fiber-reinforced case for extreme durability.
• Iconic Octagon design in an ultra-flat case, representing a modern homage to the classic G-Shock shape.
• 20 Bar water resistance allows for worry-free swimming and snorkeling without equipment in everyday life and on vacation.

Care Instructions for Wristwatches

Care & Cleaning

• Daily: Wipe case and strap with a soft, dry cloth to remove dirt and sweat.
• Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
  Important: Screw crown in tightly beforehand!!!
• Not waterproof: Clean only dry or slightly damp, do not use water or cleaning agents.
• Avoid: Aggressive agents, perfume, cosmetics, and heat.
• Leather straps: Do not soak, clean only slightly damp, and let dry away from heat.
• Water resistance: Do not wear when showering or bathing, have it checked annually.
• Battery (Quartz): Have a dead battery replaced immediately.
• Mechanical watches: Service by a master watchmaker every 5 years.

Storage & Handling

• Store watches separately, not directly with other jewelry (risk of scratches).
• Remove mechanical watches when winding, do not leave crown pulled out.

Jewellery Care – How to Keep Your Jewellery Beautiful:

• Remove jewellery before showering, bathing, and sports.
• Avoid direct sun – wood, leather & co. can fade.
• Hands off – constant touching leaves grease and dirt.
• No aggressive cleaning agents like chlorine, salt water, or disinfectants.
• Apply cosmetics and perfume first, then put on jewellery.