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MASTER OF G
GRAVITYMASTER

GR-B300EC-1A

My GShock

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 symbolising toughness, with accents in vivid emergency colours that capture the world of professionals involved in rescue efforts and other critical missions. The organic form of the GRAVITYMASTER GR-B300EC 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 travelled, and more.

  • From left: GW-9500MEC-1, GWG-B1000EC-1A, GR-B300EC-1A
  • Emergency colours accenting a black watch face
  • Cutting-edge design imbued with functional beauty
  • Solar-powered timekeeping with Bluetooth® connectivity
  • Attention to materials: Bio-based resin
  • Back engraving

Specifications

FEATURES

Emergency colours accenting a black watch face

Vivid red, orange and yellow hues employed by rescue teams and other professionals are featured as accent colours. Their striking contrast against the powerful solid black design ensures readability while creating a look befitting professional gear.

*Image shows the GR-B300EC-1A.

Close-up of the dial of the Master of G Gravitymaster GR-B300EC-1A, in the background: a rescue helicopter in action
Close-up of the dial of the Master of G Gravitymaster GR-B300EC-1A, in the background: a rescue helicopter in action

Cutting-edge design imbued with functional beauty
GRAVITYMASTER
GR-B300EC

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 travelled and more.

*Second image shows the GR-B300-1A.


DETAILS

Carbon Core Guard structure, both strong and light

A carbon fibre-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.

*1 Due to the characteristics of carbon fibre-reinforced resin, the pattern and colour tone that appears on the surface will vary model by model.

*Image shows the GR-B300EC-1A.

Carbon Core Guard structure
Carbon Core Guard structure

A heap of transparent resin granules

Attention to materials: Bio-based resin

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.

*Image is included for illustrative purposes only.

A heap of transparent resin granules

Solar-powered timekeeping with Bluetooth® connectivity and/or radio control for enhanced accuracy and reliability

GR-B300EC: Bluetooth®
GWG-B1000EC: Bluetooth® and Multiband 6 radio control
GW-9500MEC: Multiband 6 radio control

*Image shows the GR-B300EC-1A.

The Gravitymaster GR-B300EC-1A Bluetooth® watch in front of a smartphone with information about the watch on its display
The Gravitymaster GR-B300EC-1A Bluetooth® watch in front of a smartphone with information about the watch on its display

The illuminated display of the digital-analogue GWG-B1000EC-1A wristwatch in the dark

Super Illuminator (high-brightness LED light) for maintaining watch readability in the dark

GR-B300EC: Dial
GWG-B1000EC: Dial and LCD (Full-auto light)
GW-9500MEC: LCD (Full-auto light)

*Image shows the GWG-B1000EC-1A.

The illuminated display of the digital-analogue GWG-B1000EC-1A wristwatch in the dark

*The colour tone of the listed products may differ from the actual product in some cases.

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