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GRAVITYMASTER
GRB300
A timepiece for aviation lovers with a cutting-edge design delivering strength and functionality
Introducing a trio of new models featuring the Carbon Core Guard structure, which leverages the special properties of a carbon material also used in aircraft fuselages. This structure, combined with the seamless bezel design inspired by next-generation aircraft, creates a form both cutting-edge and powerful. Enjoy all the practical features as well, including dual-time simultaneously displaying the time in two time zones and a flight log memory function for recording the current location and time, routes travelled, and more. The sky is the limit — so this watch expresses a passion for aviation in a style befitting the GRAVITYMASTER line.
Featured collection
FEATURES
Seamless design offering functional beauty
An organic form inspired by next-generation aircraft is expressed with the seamless exterior design. A sense of unity is achieved by connecting the exterior surfaces, from the case to the band, smoothly and seamlessly. This design creates a tough, cutting-edge look, seemly for a new addition to the GRAVITYMASTER line.
3D face design for enhanced readability
The large-diameter, triple-layer dial with a sense of depth ensures readability for pilots, whose job demands intuitive reading of time. In addition to large, dimensional index marks and inset dials inspired by instrument panels, the metal bezel accentuating the large watch face ensures this design exudes functionality.
Dual time: Simultaneous display of time in two cities
The main dial and inset dial simultaneously display times in two cities located in different time zones. A dedicated app makes it easy to configure world time settings. Switching between home time and world time is a snap, as well. This watch puts accurate time management just a fingertip away.
Colouration evoking the look of a cockpit
A high-contrast black and white colour scheme enhances the visibility of the watch hands and index marks, components responsible for the most vital watch functions. Red and blue colour variations are offered as well, with the red model inspired by the display colour of a cockpit instrument panel’s nighttime illumination, and the blue, that of a head-up display (HUD). These distinctive combinations of colour deliver practical functionality expressing an aviation worldview.
DETAILS
Layer Guard and Carbon Core Guard structures: Featuring innovative combinations of materials
The intricately shaped bezel employs integrated moulding and has two rings — a metal ring and a urethane ring — installed beneath it. This combination of materials gives the bezel — a structural component — a refined visual presence that embodies the intricacy and sophistication of next-generation aircraft. The case is made with carbon fibre-reinforced resin, a material delivering both strength and lightness. The side buttons have anti-slip texturing inspired by hazard warning stripe tapes, and the guards beneath the buttons have been eliminated for even better operability.
Rotary disc indicator: Offering display for multiple functions
The rotary disc indicator at the 9 o’clock position uses a dual-coil motor to ensure smooth rotation. It indicates battery level and alarm on/off status, as well as displaying motion linked to each mode.
Flight log: Helpful for flight history management
Sync the watch with a smartphone and press a button on the watch to record the current time and position on a map within the dedicated app — a useful function for managing flight logs with details including times and locations of departure and arrival. In addition, plotted data can be grouped for batch management of travel record details including points of departure, transit points, and home destinations.
*This app is currently in development, and specifications are not yet final.
Attention to materials: Bio-based resin
Key resin components used in the case, bezel, and band are made with bio-based resin. Produced using renewable organic resources, this material is expected to help reduce environmental impact.
*Graphic is included for illustrative purposes.
Solar-powered timekeeping with Bluetooth® for enhanced accuracy and reliability
Super Illuminator (high-brightness LED light) for maintaining watch readability in the dark
*Image shows the GRB300-1A.
CASIO WATCHES APP
* App screens shown here may differ from actual screens, since the app is currently under development.
- Automatic time adjustment(four times a day)
- Easy watch setting
- World time(about 300 cities)
- Flight log
(Pressing a button on the watch records the date, time and position on a map within the app. Also includes a grouping function for batch management of multiple flights.)
- Phone finder
* Updating of internal data according to the latest time zone/ daylight saving time information
* Bluetooth® wordmark and logo are registered trademarks of Bluetooth SIG, Inc. and any use of these marks by Casio Computer Co., Ltd. is under license.
* Apple, Apple logo and iPhone are trademark of Apple Inc. registered in the United States and other countries. App Store is a service mark of Apple Inc.
Watch Functions
• Shock-resistant structure
• 20 bar water resistance
• Solar-powered
• Smartphone Link
• Dual time
• Stopwatch
• Countdown timer
• Alarm
• LED light (Super Illuminator)
• Date display and day indicator