Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF
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Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF

Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF

Product Highlights
The GR-B300 is a GRAVITYMASTER timepiece that utilizes the characteristics of carbon material used in aircraft bodies, such as impact resistance, rigidity, and durability. It features a shock-resistant structure called the "Carbon Core Guard Structure," incorporating carbon fiber-reinforced resin in the case and a seamless bezel inspired by next-generation aircraft, creating a powerful form befitting the GRAVITYMASTER series. Designed for flight recording, it offers features like a flight log function for recording current position and time, and a dual time display for showing two time zones simultaneously, enhancing the aviation world for pilots and aircraft alike. With intuitive readability essential for flight situations, it boasts large, three-dimensional hour markers and a metal bezel that accentuates the wide face, enhancing functionality. The use of a dual-coil motor in the 9 o'clock side's disk hand ensures precise movement and aesthetic appeal. In addition to functions like alarm ON/OFF and stopwatch, it serves as a battery indicator. The design combines high-contrast point colors seen in aircraft cockpits with functional dark color variations on the case, bezel, and band. Environmentally friendly biomass plastic is used in the case, bezel, and band. By incorporating Bluetooth® connectivity for time correction, it ensures the time accuracy required for aviation missions while also prioritizing practicality with solar power. The GRAVITYMASTER supports relentless challenges toward the limits, embodying the world of professional aviation and the aspiration for the skies.
Product Overview
From the G-SHOCK MASTER OF G series designed for professionals operating in harsh environments comes the aviation-themed GRAVITYMASTER GR-B300.
Gender Men's
Dial Multi-needle analog
Drive System Tough Solar *Solar charging system
Case Shape Round (Circular)
Case Size 54.7mm
Case Material Carbon *Biomass plastic/resin (Biomass plastic)
Glass Material Inorganic glass
Band Type Resin *Biomass plastic/Band length: 145-215mm
Band Color Black
Water Resistance 20-bar water resistance
Other Features
  • Dial Color: Black
  • Weight: 71g
  • Calendar Function: Full Auto Calendar
  • Band: Resin Band
  • Length: 145-215mm/28.6mm
  • Weight: 71g
  • Shock-resistant structure
  • Tough Solar (Solar charging system)
  • 20-bar water resistance
  • Mobile Link Function (Function linkage via Bluetooth® communication with compatible mobile phones)
  • Dual Time (Time swapping function with Home Time)
  • Stopwatch (1-second, 24-hour, with split)
  • Timer (Set unit: 1 minute, maximum set: 24 hours, measurement in 1-second increments)
  • Electronic alarm
  • Battery indicator display
  • Power-saving function (Stops the hand movement after a certain period in the dark to save power)
  • Full Auto Calendar
  • Date/Day display
  • LED Light (Super Illuminator, with afterglow function)
  • Operating time from full charge without solar generation: Approximately 5 months/Power-saving mode: Approximately 18 months
Release Date May 17, 2024
Retail Price ¥ 49,500.00 JPY
$84.72

Original: $242.05

-65%
Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF

$242.05

$84.72

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Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF - Image 3
Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF - Image 4
Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF - Image 5

Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1AJF

Product Highlights
The GR-B300 is a GRAVITYMASTER timepiece that utilizes the characteristics of carbon material used in aircraft bodies, such as impact resistance, rigidity, and durability. It features a shock-resistant structure called the "Carbon Core Guard Structure," incorporating carbon fiber-reinforced resin in the case and a seamless bezel inspired by next-generation aircraft, creating a powerful form befitting the GRAVITYMASTER series. Designed for flight recording, it offers features like a flight log function for recording current position and time, and a dual time display for showing two time zones simultaneously, enhancing the aviation world for pilots and aircraft alike. With intuitive readability essential for flight situations, it boasts large, three-dimensional hour markers and a metal bezel that accentuates the wide face, enhancing functionality. The use of a dual-coil motor in the 9 o'clock side's disk hand ensures precise movement and aesthetic appeal. In addition to functions like alarm ON/OFF and stopwatch, it serves as a battery indicator. The design combines high-contrast point colors seen in aircraft cockpits with functional dark color variations on the case, bezel, and band. Environmentally friendly biomass plastic is used in the case, bezel, and band. By incorporating Bluetooth® connectivity for time correction, it ensures the time accuracy required for aviation missions while also prioritizing practicality with solar power. The GRAVITYMASTER supports relentless challenges toward the limits, embodying the world of professional aviation and the aspiration for the skies.
Product Overview
From the G-SHOCK MASTER OF G series designed for professionals operating in harsh environments comes the aviation-themed GRAVITYMASTER GR-B300.
Gender Men's
Dial Multi-needle analog
Drive System Tough Solar *Solar charging system
Case Shape Round (Circular)
Case Size 54.7mm
Case Material Carbon *Biomass plastic/resin (Biomass plastic)
Glass Material Inorganic glass
Band Type Resin *Biomass plastic/Band length: 145-215mm
Band Color Black
Water Resistance 20-bar water resistance
Other Features
  • Dial Color: Black
  • Weight: 71g
  • Calendar Function: Full Auto Calendar
  • Band: Resin Band
  • Length: 145-215mm/28.6mm
  • Weight: 71g
  • Shock-resistant structure
  • Tough Solar (Solar charging system)
  • 20-bar water resistance
  • Mobile Link Function (Function linkage via Bluetooth® communication with compatible mobile phones)
  • Dual Time (Time swapping function with Home Time)
  • Stopwatch (1-second, 24-hour, with split)
  • Timer (Set unit: 1 minute, maximum set: 24 hours, measurement in 1-second increments)
  • Electronic alarm
  • Battery indicator display
  • Power-saving function (Stops the hand movement after a certain period in the dark to save power)
  • Full Auto Calendar
  • Date/Day display
  • LED Light (Super Illuminator, with afterglow function)
  • Operating time from full charge without solar generation: Approximately 5 months/Power-saving mode: Approximately 18 months
Release Date May 17, 2024
Retail Price ¥ 49,500.00 JPY

Product Information

Shipping & Returns

Description

Product Highlights
The GR-B300 is a GRAVITYMASTER timepiece that utilizes the characteristics of carbon material used in aircraft bodies, such as impact resistance, rigidity, and durability. It features a shock-resistant structure called the "Carbon Core Guard Structure," incorporating carbon fiber-reinforced resin in the case and a seamless bezel inspired by next-generation aircraft, creating a powerful form befitting the GRAVITYMASTER series. Designed for flight recording, it offers features like a flight log function for recording current position and time, and a dual time display for showing two time zones simultaneously, enhancing the aviation world for pilots and aircraft alike. With intuitive readability essential for flight situations, it boasts large, three-dimensional hour markers and a metal bezel that accentuates the wide face, enhancing functionality. The use of a dual-coil motor in the 9 o'clock side's disk hand ensures precise movement and aesthetic appeal. In addition to functions like alarm ON/OFF and stopwatch, it serves as a battery indicator. The design combines high-contrast point colors seen in aircraft cockpits with functional dark color variations on the case, bezel, and band. Environmentally friendly biomass plastic is used in the case, bezel, and band. By incorporating Bluetooth® connectivity for time correction, it ensures the time accuracy required for aviation missions while also prioritizing practicality with solar power. The GRAVITYMASTER supports relentless challenges toward the limits, embodying the world of professional aviation and the aspiration for the skies.
Product Overview
From the G-SHOCK MASTER OF G series designed for professionals operating in harsh environments comes the aviation-themed GRAVITYMASTER GR-B300.
Gender Men's
Dial Multi-needle analog
Drive System Tough Solar *Solar charging system
Case Shape Round (Circular)
Case Size 54.7mm
Case Material Carbon *Biomass plastic/resin (Biomass plastic)
Glass Material Inorganic glass
Band Type Resin *Biomass plastic/Band length: 145-215mm
Band Color Black
Water Resistance 20-bar water resistance
Other Features
  • Dial Color: Black
  • Weight: 71g
  • Calendar Function: Full Auto Calendar
  • Band: Resin Band
  • Length: 145-215mm/28.6mm
  • Weight: 71g
  • Shock-resistant structure
  • Tough Solar (Solar charging system)
  • 20-bar water resistance
  • Mobile Link Function (Function linkage via Bluetooth® communication with compatible mobile phones)
  • Dual Time (Time swapping function with Home Time)
  • Stopwatch (1-second, 24-hour, with split)
  • Timer (Set unit: 1 minute, maximum set: 24 hours, measurement in 1-second increments)
  • Electronic alarm
  • Battery indicator display
  • Power-saving function (Stops the hand movement after a certain period in the dark to save power)
  • Full Auto Calendar
  • Date/Day display
  • LED Light (Super Illuminator, with afterglow function)
  • Operating time from full charge without solar generation: Approximately 5 months/Power-saving mode: Approximately 18 months
Release Date May 17, 2024
Retail Price ¥ 49,500.00 JPY