GR-B300EC-1ADR This G-SHOCK MASTER OF G GRAVITYMASTER model features a black bio-based resin band with a bio-based carbon, bio-based resin, and stainless steel case and bezel, paired with a black analog dial accented by vivid red, orange, and yellow emergency-inspired details. Built with shock-resistant construction, Carbon Core Guard structure, mineral glass, a black ion-plated bezel, Tough Solar power, screw-lock crown, and 200-meter water resistance, it combines lightweight durability with a bold aviation-inspired design. Confirmed functions include Bluetooth smartphone connectivity, automatic time adjustment, dual time, world time for approximately 300 cities through the CASIO WATCHES app, flight log memory, 1-second stopwatch, 24-hour countdown timer, daily alarm, phone finder, full auto-calendar, battery level indicator, power saving, and Super Illuminator LED lighting, making it a practical choice for travel, active use, and everyday wear.