Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF
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Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF

Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF

Product Highlights
The GR-B300 GRAVITYMASTER features a shock-resistant structure called the "Carbon Core Guard Structure," utilizing the characteristics of carbon material used in aircraft bodies (impact resistance, rigidity, and durability). By combining a case made of carbon fiber-reinforced resin with a seamless bezel inspired by next-generation aircraft, it achieves a powerful form as a GRAVITYMASTER. Designed with features like a Flight Log function for recording flight data, and Dual Time for displaying two time zones simultaneously, it captures the essence of the aviation world for aircraft and pilots. With intuitive readability in mind for crucial visibility during flights, it enhances functionality with large, three-dimensional hour markers and a metal bezel that accentuates the wide face. The use of a dual-coil motor in the 9 o'clock side's disc hand ensures precise movement and aesthetic appeal. Serving as both an alarm ON/OFF function and a stopwatch, it also functions as a battery indicator. The design incorporates high-contrast point colors reminiscent of aircraft cockpits on the dial and buttons, while offering a functional dark color variation. The case, bezel, and band are made from biomass plastic to reduce environmental impact. By ensuring time accuracy required for aviation missions through Bluetooth® connectivity for time correction and pursuing practicality with solar power, the GRAVITYMASTER supports relentless challenges towards the extreme while embodying the world of professional aviation and the "yearning for the sky."
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 Color Black tones
Water Resistance 20 bar water resistance
Other Features
  • Dial Color: Black tones
  • 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 (with time swapping function between Home Time)
  • Stopwatch (1-second, 24-hour measurement 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 to save power after a certain period in the dark)
  • 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 2024/05/17
Retail Price ¥ 49,500.00 JPY
$243.19

Original: $694.84

-65%
Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF

$694.84

$243.19

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Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF - Image 3
Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF - Image 4
Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF - Image 5

Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF

Product Highlights
The GR-B300 GRAVITYMASTER features a shock-resistant structure called the "Carbon Core Guard Structure," utilizing the characteristics of carbon material used in aircraft bodies (impact resistance, rigidity, and durability). By combining a case made of carbon fiber-reinforced resin with a seamless bezel inspired by next-generation aircraft, it achieves a powerful form as a GRAVITYMASTER. Designed with features like a Flight Log function for recording flight data, and Dual Time for displaying two time zones simultaneously, it captures the essence of the aviation world for aircraft and pilots. With intuitive readability in mind for crucial visibility during flights, it enhances functionality with large, three-dimensional hour markers and a metal bezel that accentuates the wide face. The use of a dual-coil motor in the 9 o'clock side's disc hand ensures precise movement and aesthetic appeal. Serving as both an alarm ON/OFF function and a stopwatch, it also functions as a battery indicator. The design incorporates high-contrast point colors reminiscent of aircraft cockpits on the dial and buttons, while offering a functional dark color variation. The case, bezel, and band are made from biomass plastic to reduce environmental impact. By ensuring time accuracy required for aviation missions through Bluetooth® connectivity for time correction and pursuing practicality with solar power, the GRAVITYMASTER supports relentless challenges towards the extreme while embodying the world of professional aviation and the "yearning for the sky."
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 Color Black tones
Water Resistance 20 bar water resistance
Other Features
  • Dial Color: Black tones
  • 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 (with time swapping function between Home Time)
  • Stopwatch (1-second, 24-hour measurement 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 to save power after a certain period in the dark)
  • 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 2024/05/17
Retail Price ¥ 49,500.00 JPY

Product Information

Shipping & Returns

Description

Product Highlights
The GR-B300 GRAVITYMASTER features a shock-resistant structure called the "Carbon Core Guard Structure," utilizing the characteristics of carbon material used in aircraft bodies (impact resistance, rigidity, and durability). By combining a case made of carbon fiber-reinforced resin with a seamless bezel inspired by next-generation aircraft, it achieves a powerful form as a GRAVITYMASTER. Designed with features like a Flight Log function for recording flight data, and Dual Time for displaying two time zones simultaneously, it captures the essence of the aviation world for aircraft and pilots. With intuitive readability in mind for crucial visibility during flights, it enhances functionality with large, three-dimensional hour markers and a metal bezel that accentuates the wide face. The use of a dual-coil motor in the 9 o'clock side's disc hand ensures precise movement and aesthetic appeal. Serving as both an alarm ON/OFF function and a stopwatch, it also functions as a battery indicator. The design incorporates high-contrast point colors reminiscent of aircraft cockpits on the dial and buttons, while offering a functional dark color variation. The case, bezel, and band are made from biomass plastic to reduce environmental impact. By ensuring time accuracy required for aviation missions through Bluetooth® connectivity for time correction and pursuing practicality with solar power, the GRAVITYMASTER supports relentless challenges towards the extreme while embodying the world of professional aviation and the "yearning for the sky."
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 Color Black tones
Water Resistance 20 bar water resistance
Other Features
  • Dial Color: Black tones
  • 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 (with time swapping function between Home Time)
  • Stopwatch (1-second, 24-hour measurement 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 to save power after a certain period in the dark)
  • 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 2024/05/17
Retail Price ¥ 49,500.00 JPY
Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF | IPPO WATCH