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| *This product is a parallel import product, so it is new and unused. There may be scratches or dirt on the box. Please understand this before purchasing. |
7 Year Warranty Campaign g-Shock G-Shock CASIO G-SHOCK Master of G Air Gravity Master Solar Bluetooth Solar Men's Watch GR-B300-1ADR MASTER OF G - AIR GRAVITYMASTER Analog Black ◆From the G-SHOCK MASTER OF G series aimed at professionals working in harsh environments, the GRAVITYMASTER GR-B300 is designed to create the worldview of aircraft and pilots. Adopts a shock-resistant "carbon core guard structure". A powerful form is achieved by combining a carbon fiber-reinforced resin case with a seamless bezel inspired by next-generation aircraft. Equipped with home time time switching function and dual time function, which is useful when traveling overseas. Large, three-dimensional hour characters and a metal bezel that emphasize the wide face improve visibility and functionality. In addition, by adopting a dual coil motor for the disc hand at 9 o'clock, we pursue movement and functional beauty of the hand. In addition to the alarm ON/OFF function and rotation representation of stopwatches, it also serves as a battery indicator. The high-contrast point colors seen in aircraft cockpits are arranged on the dial and buttons, all in dark colors. Biomass plastic is used for the case, bezel, and band. We also pursued practicality through time adjustment via Bluetooth connection and solar power. GRAVITY MASTER embodies the worldview of professional aviation and the "admiration for the sky" and supports the constant challenge to the limits. Domestic model product number: GR-B300-1AJF
| Product number | GR-B300-1ADR |
| Drive method | solar |
| Material: case | Carbon/Resin (biomass plastic) |
| Material: belt | Resin (biomass plastic) |
| windshield | inorganic glass |
| Dial color | black |
| belt color | black |
| Size (length x width x thickness) | Approximately 59 x 54.7 x 15.7mm |
| belt around arm | Approximately 14.5-21.5cm |
| weight | Approximately 71g |
| Specifications | Shock-resistant structure (shock resist) Carbon core guard structure 20 ATM water resistant Bluetooth: Connect to your smartphone and automatically adjust the time Tough solar (solar charging system) Mobile link function (function linked via Bluetooth communication with compatible mobile phones) Compatible with “CASIO WATCHES” Automatic time correction Easy clock setting World time approx. 300 cities flight log mobile phone search neobright Dual time (with time swap function with home time) Stopwatch (1 second, 24 hour meter, with split) Timer (set unit: 1 minute, maximum set: 24 hours, measured in 1 second increments) time alarm LED light (super illuminator, with afterglow function) LED: white Fully automatic calendar Power saving function (in dark places, the hands will stop moving after a certain period of time to save power) battery indicator display Operating time without solar power generation from full charge When using functions: Approximately 5 months In power saving state: Approximately 18 months *If not linked to a smartphone, it will operate with normal quartz accuracy (average monthly difference of ±15 seconds). Date/day display |
| accessories | Instruction manual (English) G-SHOCK original box |
| Guarantee | One year warranty at our store |
| ▼Would you like to join us? | |
| →Size adjustment | →Gift wrapping |
| →Name engraving/engraving | →New battery replacement before shipping |
| ・Please order together with the product. ・Some products may not be compatible with various services. Please refer to each service page for details. | |






