Whatever you’re doing, wherever you are — the G-SHOCK Master of G line has your back.
Based on Gravitymaster, Mudmaster, and Mudman models that deliver peak performance in punishing conditions in the air and on land, this line features a black watch case symbolizing toughness, with accents in vivid emergency colors that capture the world of professionals involved in rescue efforts and other critical missions.
The organic form of the Gravitymaster GRB300EC is inspired by next-generation aircraft and rendered with a seamless exterior design. The Carbon Core Guard structure and wide 3D face deliver durability, readability, and a comfortable fit. Enjoy all the practical functions as well, including dual-time simultaneously showing the time in two cities, a flight log memory function for recording routes traveled, and more.
Features
- Vivid red, orange, and yellow hues employed by rescue teams and other professionals are featured as accent colors. Their striking contrast against the powerful solid black design ensures readability while creating a look befitting professional gear.
- The organic form inspired by next-generation aircraft is rendered with a seamless exterior design. Features including the watch’s Carbon Core Guard structure and the wide 3D face deliver durability, readability, and a comfortable fit. Enjoy all the practical functions as well, including dual-time simultaneously displaying the time in two cities, a flight log memory function for recording routes traveled, and more.
- A carbon fiber-reinforced resin case*1 protects the module, making the most of the high degree of strength and outstanding durability delivered by the carbon material to achieve a size ensuring a comfortable fit.
- Key resin components used in the case, bezel, band, and more are made with bio-based resin. Produced using renewable organic resources, the material is expected to help reduce environmental impact.
- Solar-powered timekeeping with Bluetooth® connectivity and/or radio control for enhanced accuracy and reliability
- Super Illuminator (high-brightness LED light) for maintaining watch readability in the dark
Specifications
- Case size (L× W× H): 59 × 54.7 × 15.7 mm
- Weight: 71 g
- Bio-based resin band
- Shock Resistant
- Carbon Core Guard structure
- 200-meter water resistance
- Tough Solar (Solar powered)
- Bluetooth: Connects to a smartphone and automatically adjusts the time
- Mobile link (Wireless linking using Bluetooth®)
- App connectivity feature: Auto time adjustment / Easy watch setting / Approximately 300 world time cities / Flight log / Phone finder
- Glass: Mineral Glass
- Crown: Screw Lock Crown
- Surface treatment: Black ion plated bezel
- Compatible band size: 145 to 215 mm
- Other: Neobrite
- World time: Dual time (Home City time swapping)
- 1-second stopwatch
- Measuring capacity: 23:59'59.
- Measuring modes: Elapsed time, split time
- Countdown timer
- Measuring unit: 1 second
- Countdown range: 24 hours
- Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
- Alarm/hourly time signal: Daily alarm
- Light: LED light (Super Illuminator) / Afterglow
- Light color: LED White
- Calendar: Full auto-calendar (to year 2099)
- Energy saving feature: Power Saving (hands stop to save power when the watch is left in the dark)
- Battery display/alert: Battery level indicator
- Approx. battery operating time: 5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
- Approx. battery operating time: 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
- Accuracy: ±15 seconds per month (with no mobile link function)
- Date display
- Day indicator
- Regular timekeeping:
- Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)
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