Casio G-Shock GA-100TU-1A3ER Men's Watch • Extreme Shock Resistance • World Time & Stopwatch

The Casio G-Shock GA-100TU-1A3ER is the epitome of durability in a striking utility look. As a robust men's watch, it combines an olive-black design with legendary G-Shock technology that withstands even the toughest conditions.

In addition to impressive magnetic resistance, this model offers useful features for everyday life and sports, packaged in a case that radiates a spirit of adventure.

Special Features of the Casio GA-100TU-1A3ER

• Extreme shock resistance reliably protects the watch from shocks and impacts during daily use.
• Precise functions such as the 1/1000-second stopwatch with speed display and world time for 29 time zones.
• High water resistance of up to 20 bar makes this watch the ideal partner for all outdoor and water activities.

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.