Casio Gravitymaster GWR-B3000B-8AER Men's Watch Black • Sapphire Glass • Triple G Resist

The Casio Gravitymaster GWR-B3000B-8AER is a high-precision pilot's watch from the renowned Master of G line, inspired by the exhilarating speed of supersonic aircraft. It combines exceptional durability with cutting-edge technology, built for professionals who need to rely on their watch under the most demanding conditions — on land, at sea, or in the air.

At its core is the advanced TOUGH MVT.2 solar movement with automatic time synchronisation via Multiband 6 radio and Bluetooth connectivity to the CASIO WATCHES app. The double-layer case crafted from bio-based carbon and stainless steel delivers superior resistance to shocks, centrifugal forces, and vibrations thanks to the Triple G Resist structure. The deep black dial with micro-fabricated surface textures minimises reflections for clear legibility in any environment. A scratch-resistant, spherical sapphire crystal with anti-reflective coating and a soft urethane strap made from bio-based resin complete the package. The watch is water-resistant to 20 bar and bears the Made in Japan distinction.

Key Features of the Casio GWR-B3000B-8AER

• Triple G Resist: Double-layer hollow structure protects against shocks, centrifugal forces, and vibrations for maximum reliability in the field.
• TOUGH MVT.2 Solar Movement: Advanced self-regulation with automatic hand correction following impacts or magnetic interference, powered by stable solar energy.
• Smartphone Connectivity: Bluetooth connection to the CASIO WATCHES app enables automatic time synchronisation, access to flight logs, and a phone finder function.

Care Instructions for Wristwatches

Care & Cleaning

• Daily: Wipe case and bracelet with a soft, dry cloth to remove dirt and perspiration.
• Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
  Important: Screw down the crown firmly beforehand!!!
• Not water-resistant: Clean only with a dry or slightly damp cloth; do not use water or cleaning agents.
• Avoid: Harsh chemicals, perfume, cosmetics and heat.
• Leather straps: Do not soak; clean only slightly damp and allow to dry away from heat sources.
• Water resistance: Do not wear in the shower or bath; have it tested annually.
• Battery (quartz): Have a depleted battery replaced immediately.
• Mechanical watches: Service by a master watchmaker every 5 years.

Storage & Handling

• Store the watch separately, not in direct contact with other jewellery (risk of scratching).
• Place mechanical watches on a flat surface when winding; do not leave the crown pulled out.