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The sky's the limit! Introducing the GRAVITYMASTER GR-B300, a professional aviation-inspired timepiece designed to withstand even the harshest environments, from the G-SHOCK MASTER lineup. The GR-B300 features a Carbon Core Guard structure that delivers the shock resistance, rigidity, and corrosion resistance of carbon materials used in aircraft fuselages. A carbon fiber-reinforced resin case and a seamless bezel design inspired by next-generation aircraft combine to create a bold and powerful look. See the world through the eyes of a pilot with a flight log memory function that records the current location and time, as well as dual time that shows the time in two time zones simultaneously. Plus, just tap the app to instantly switch between home time and local time — a practical function that makes traveling abroad much smoother. The large hour markers and metal bezel highlight the functionality of the large dial, enhancing visibility, which is important for pilots whose work requires visual reading of the time. The rotating disc indicator at 9 o’clock uses a dual-winding motor to ensure functional beauty and smooth rotation. The indicator not only rotates to show the on/off of the alarm and stopwatch; it also functions as a battery level indicator. The high-contrast black-and-white color scheme with colored accents on the dial and buttons evokes the look of cockpit controls, while the dark-colored variants reflect the practical functionality of the aviation worldview. The main plastic components used for the case, bezel, and strap are all made of bioplastic, a material that is expected to help reduce environmental impact.

Onlinestore Price

RM2,295.00

GRAVITYMASTER

MASTER OF G-AIR

GR-B300-1A

OUT OF
STOCK

OUT OF
STOCK

OUT OF
STOCK

LED light

Expresses a natural form inspired by next-generation aircraft.

Seamless design delivers functional beauty

3D face design enhances readability

Dual Time Mode: Displays time in two cities simultaneously

Colors evoke the shape of the cockpit

20 bar water resistant
Casual Design
Stable solar power
Keep you on time
Shock resistant
Easy operation via smartphone connection

Specifications

Case size (L× W× H)
49.3 × 44.4 × 12.1 mm
Weight
78 g
Case and bezel material
Resin / Stainless steel
Band
Resin Band
Construction
Shock Resistant
Water resistance
200-meter water resistance
Power supply and battery life
Approx. battery life: 3 years on SR726W X 2
Basic Information
Glass
Mineral Glass
Other
Neobrite
Exterior
World time
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off
Stopwatch
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Timer
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
Alarm/hourly time signal
5 daily alarms
Hourly time signal
Light
Double LED light
LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
Light color
LED:White
Mute feature
Button operation tone on/off
Other features
12/24-hour format
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Regular timekeeping:
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)
Digital: Hour, minute, second, pm, month, date

Calendar
Full auto-calendar (to year 2099)
Accuracy
Accuracy: ±15 seconds per month
Features

Operation Guide

DETAIL

The complexly shaped bezel uses an integral molding and features two rings—one metal and one urethane—installed underneath. This combination of materials gives the bezel—a structural component—a visually refined look that reflects the complexity and sophistication of next-generation aircraft. The case is made of carbon fiber reinforced plastic, a material that offers both strength and lightness. The side buttons feature an anti-slip texture inspired by hazard warning stripes, and the protective layer under the buttons has been removed for even better operability.

Key resin components of the case and band are made with bio-based resin. Produced using renewable organic resources, this material is expected to help reduce environmental impact.

Attention to materials: Bio-based resin

MOVIE

The rotating disc indicator at 9 o'clock uses a dual coil motor to ensure smooth rotation. This icon indicates battery level and alarm on/off status, as well as showing the movement associated with each mode.

Turntable Indicator: Provides display for multiple functions

Carbon Core Protection and Layer Protection Structure: Featuring an innovative combination of materials

Sync the watch with your smartphone and press the watch button to record the current time and location on a map in the dedicated app — a useful function for managing flight logs with details including departure and arrival times and locations. Additionally, the plotted data can be grouped to manage a variety of travel log details including departure points, transit points, and home destinations.

*This application is still under development and this specification is not final.

Flight Log: Useful for managing flight history

Solar-powered watch with Bluetooth® connectivity for enhanced accuracy and reliability

Super illuminator (high-brightness LED) allows viewing of the watch in the dark

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2025 Casio Malaysia Sdn Bhd: 201301028817 (1058647-D)

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(Note: After you place your order at the discounted price, we will contact you to confirm your order details. Please check your phone to avoid missing any contact from us.)

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1 Bag = RM189 + Free Shipping
2 Bag = RM378 + Free Shipping