Casio G-SHOCK GRAVITYMASTER GR-B300-1AJF Solar Aviation Watch
Casio G-SHOCK GRAVITYMASTER GR-B300-1AJF Solar Aviation Watch
The Casio G-SHOCK GRAVITYMASTER GR-B300-1AJF is a Master of G aviation watch powered by Casio Tough Solar technology. It combines a Carbon Core Guard structure, Bluetooth smartphone connectivity, 200-meter water resistance, and an aviation-inspired black and white analog dial.
The watch uses Casio Module 5719 with a mineral crystal, Neobrite hands and markers, and a bio-based resin band. Its distinctive rotary disc at 9 o’clock is driven by a dual-coil motor and provides battery-level and alarm-related indications. Smartphone functions include automatic time adjustment, world time, Flight Log, Phone Finder, and home-time/local-time swapping.
Additional functions include a 24-hour stopwatch, 24-hour countdown timer, daily alarm, full auto-calendar through 2099, Super Illuminator LED lighting, and power saving. The case measures 59.0 × 54.7 × 15.7 mm and the watch weighs 71 g.
Key Features
Tough Solar rechargeable power system
Casio Module 5719
Carbon Core Guard shock-resistant structure
Black and white analog aviation-style dial
Bluetooth Mobile Link with CASIO WATCHES app
Flight Log, world time, automatic time adjustment, and Phone Finder
Mineral crystal with Neobrite hands and markers
20 bar / 200-meter water resistance
Specifications
Specification | Details |
Brand | Casio |
Model / Reference | GR-B300-1AJF |
Collection / Series | G-SHOCK Master of G GRAVITYMASTER |
Movement | Casio Module 5719 |
Caliber | 5719 |
Movement Type | Tough Solar rechargeable analog movement with Bluetooth Mobile Link |
Case Material | Carbon and resin components, including bio-based resin |
Case Thickness | 15.7 mm |
Crystal | Mineral glass |
Dial Color | Black and white |
Dial Details | Analog aviation-inspired dial with Neobrite hands and markers; rotary disc indicator at 9 o’clock |
Bracelet / Strap | Bio-based resin band |
Water Resistance | 20 bar / 200 meters |
Functions | Bluetooth smartphone link, automatic time adjustment, world time, Flight Log, Phone Finder, dual time, stopwatch, countdown timer, daily alarm, full auto-calendar, Super Illuminator, power saving |
Power Reserve | Approximately 5 months without further light exposure; approximately 18 months with power saving enabled in darkness |
Other | Case dimensions: 59.0 × 54.7 × 15.7 mm; weight: 71 g; dual-coil motor rotary disc |
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