Orient Kamasu “Aoumigame” Men’s Automatic GMT Watch RA-BC0002E (42.8 mm, Olive Green Dial, Sapphire Crystal, Dual Time Zone GMT, 200 m Diver, SUS316L Stainless Steel)

The Traveling Spirit of “Aoumigame” (アオウミガメ – The Japanese Green Sea Turtle)

The ultimate evolution of Orient’s iconic diving series takes the leap into international travel with the nickname “Aoumigame” (アオウミガメ – the green sea turtle). Few creatures in the animal kingdom embody the spirit of a GMT watch quite so perfectly: the green sea turtle is legendary for undertaking colossal transoceanic migrations spanning thousands of kilometers, navigating across different latitudes and currents without ever losing its way.

This timepiece pays tribute to an icon of Japanese wildlife whose primary nesting grounds are located on the remote Ogasawara Islands and along the subtropical coasts of southern Japan. Its dial pays homage to the Japanese color concept where Ao (青) has historically encompassed both the hues of the sea and the vivid greens of nature (the very reason why traffic lights in Japan are traditionally called ao when they turn green). The dial features a deep olive green hue that evokes the shell and skin of a sea turtle gliding through the depths, contrasting with the GMT hand designed to track a second time zone anywhere on the planet.

Technical Specifications

Feature Technical Detail
Reference RA-BC0002E (Kamasu Diver GMT “Aoumigame”)
Main Function Professional Diver with GMT complication (Simultaneous dual time zone)
Movement Origin Japan (Japan Movement)
Movement In-House automatic mechanical movement with manual winding and hacking seconds
Caliber Orient F6P22 (22 jewels)
Power Reserve Greater than 40 hours
Accuracy +25 to -15 seconds per day
Case Dimensions 49.5 mm (lug-to-lug) × 42.8 mm (diameter without crown) × 13.4 mm (thickness)
Lug-to-Lug Width 22 mm
Total Weight 177 g
Case Material Solid stainless steel with a protected screw-down crown and screw-down solid caseback
Crystal Flat sapphire crystal with maximum scratch resistance
Bezel Rotating with graduated diving/time-reading scale and luminescent dot at 12 o’clock
Dial: “Aoumigame” olive green with a separate GMT hand and applied geometric hour markers
Luminescence: High-visibility photoluminescent treatment on hands (including GMT), hour markers, and bezel
Bracelet: SUS316L marine-grade stainless steel (wrist circumference: 140 mm to 200 mm)
Closure Type Triple-fold deployant clasp with dual side pushers and safety tab
Water Resistance 200 Meters / 20 Bar (suitable for scuba diving, water sports, and swimming)
Magnetic Resistance Japanese Industrial Standard (JIS) Class 1 (resistance greater than 4,800 A/m)
Complications Fourth central GMT hand (24 hours) and date window at 3 o’clock

Key Selling Points

• GMT Complication for Travelers and Adventurers: Thanks to the F6P22 caliber and its independent 24-hour GMT hand, it allows you to track two time zones simultaneously, making it the perfect tool for those who frequently cross borders or coordinate international operations.
• Olive-Green Dial with Japanese Identity: Unlike the standard green dials on the market, the Aoumigame-inspired olive green offers a understated, organic, and highly legible aesthetic, steering clear of flashiness and pairing perfectly with both formal suits and expedition gear.
• Standard Sapphire Crystal: Guaranteed protection against accidental scratches from keys, hard surfaces, or grains of sea sand, maintaining crystal-clear visibility throughout the watch’s lifespan.
• Fully Constructed from SUS316L Marine-Grade Stainless Steel: A higher concentration of molybdenum shields the case and bracelet against saltwater corrosion and body sweat, ensuring the metal does not degrade or cause allergic reactions.
• Genuine 200-Meter Diver Capability: Screw-down crown protected by side guards and a pressure-screwed-down case back, guaranteeing a total water resistance rating of 20 ATM for demanding aquatic activities.
• JIS Class 1 Magnetic Protection: Internal shielding that prevents timing errors caused by everyday electromagnetic fields found in computers, cell phones, or airport metal detectors.