The Orient RA-BC0001B (also referenced as RA-BC0001B30B / RA-BC0001B30) is a rugged, high-performance Japanese automatic GMT diver-design timepiece from Orient’s renowned Sports Mako Collection. Celebrated among horology purists, global travelers, and sports watch enthusiasts by its popular series nicknames—the "Mako GMT", "Black Mako GMT", or "Mako Automatic GMT"—this 42.8mm timepiece marks a major milestone by introducing a mechanical dual-time travel complication into the iconic Mako diver architecture. It pairs a solid stainless steel case with a bold black dial, high-visibility luminous geometric indices, an independent 24-hour dual-time GMT hand, a rotating 24-hour GMT bezel, a framed date calendar window at 3 o'clock, an in-house Japanese automatic mechanical movement, a scratch-resistant sapphire crystal, a certified 200-meter water resistance rating, and a solid stainless steel construction. Designed for modern adventurers, international jet-setters, and sports watch collectors seeking authentic mechanical horology and multi-timezone utility, it transitions effortlessly from ocean waters to professional business attire. The defining visual highlight of this RA-BC0001B reference is its deep black dial face, framed by an external rotating 24-hour bezel that allows instantaneous tracking of multiple time zones simultaneously. Set beneath a premium flat scratch-resistant sapphire crystal, the dial features bold geometric hour markers generously coated with luminous compound for immediate legibility in deep water or total darkness. A prominent red arrow GMT hand sweeps smoothly across the dial, providing an intuitive 24-hour reference against the bezel and chapter ring. The harmonic contrast between the deep black dial, vibrant red GMT accent, polished silver-tone markers, and brushed stainless steel casing delivers a powerful, tactical presence on the wrist. Beneath its rugged exterior, the watch is powered by Orient’s dedicated in-house Caliber F6P22 automatic mechanical GMT movement. Built with traditional self-winding mechanical architecture, the movement is equipped with manual hand-winding and second-hand hacking (stop-seconds) functionality for down-to-the-second time synchronization. Operating at 21,600 vibrations per hour across 22 jewels, this mechanical engine features an independently adjustable 24-hour GMT hand and a quickset date calendar, delivering a dependable 40-hour power reserve powered entirely by natural wrist movement or manual crown winding.  The case features classic sports diver ergonomics, measuring 42.8mm in case width (rounded to 43mm) with a profile thickness of 13.4mm, a lug-to-lug distance of 49.5mm, and a 22mm lug width, ensuring a balanced, secure fit across diverse wrist sizes. Premium dial protection and optical clarity are provided by a flat, scratch-resistant sapphire crystal. Engineered for aquatic excursions and rugged outdoor use, the solid stainless steel case incorporates a solid screw-down crown with protective crown guards and a solid screw-down caseback, achieving a certified 200-meter (20 bar / 20 ATM / 660 ft) water resistance rating suitable for everyday wear, swimming, snorkeling, and marine water sports. The timepiece comes completed on an integrated multi-link solid stainless steel construction, secured by a solid fold-over deployment clasp with a push-button release and safety lock mechanism.

• All Watches Ship from the UAE
• Express Shipping Available across the UAE and worldwide via trusted couriers like FedEx, DHL, or Aramex (selected at our discretion)
• UAE Orders: Delivered within 1 business day
• International Orders: Typically delivered within 2–5 business days after being processed
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• 14-Day Return & Refund Policy from the date of delivery – see our Refund Policy for full details