Casio G-Shock GR-B200-1B "Gravitymaster" | Rare Blackout colourway | Bluetooth | Compass | Altimeter | Barometer | Carbon Core | Pre-owned
SKU 202510WAT057
The Casio G-Shock GR-B200-1B “Gravitymaster” is part of G-Shock’s aviation-focused Master of G series, designed for pilots and adventurers who demand precision, resilience, and advanced sensor capability.
Released in July 2021, this model features the Carbon Core Guard structure for exceptional strength-to-weight balance and protection against impact and vibration. Its stealthy, low-key blacked-out colourway makes it one of the most distinctive and understated Gravitymaster variants — a favourite among collectors who appreciate subtle tactical aesthetics.
Condition: Very good overall, near pristine with only faint signs of wear. Complete with box, tin, and full documentation. The outer box has light cosmetic wear (see photos). Fully functional and tested.
Release: July 2021
Model Code: GR-B200-1B
Nickname: Gravitymaster
Series: Master of G – Aviation
Movement: Quartz (Module 5635)
Water Resistance: 200 m
Case Size: Approx. 63 × 54.1 × 18.3 mm
Weight: 80 g
Functions: Carbon Core Guard, altimeter, barometer, thermometer, digital compass, step tracker, world time, Tough Solar, Bluetooth smartphone link (via Casio Watches app), auto backlight, stopwatch, countdown timer, flight log memory, 5 alarms, full auto calendar
All photos show the actual watch in stock. This is an authentic Japanese import already located in the UK — no import duties or customs delays for UK buyers.
Collector Insight
The GR-B200-1B stands out within the Gravitymaster lineup for its rare all-black colour scheme and complete sensor suite. Its understated military look contrasts sharply with the brighter aviation releases, giving it a cult following among collectors who value stealth designs. As part of the modern Bluetooth-enabled Master of G generation, this model continues to grow in collectibility for its balanced mix of advanced function, durability, and refined design language.
About Snows Mini Limited
Snows Mini Limited is a UK-registered importer specialising in Japanese watches, video games, and Blu-ray collectibles. We source authentic, high-quality items rarely found in UK or EU markets, selected for their originality, condition, and collector appeal.