The Orient RA-AC0N01B (also referenced as RA-AC0N01B10B) is an ultra-robust, professional-grade Japanese automatic land sports timepiece from Orient’s renowned M-Force Collection. Recognized globally among watch purists and outdoor survival enthusiasts by its iconic series nicknames—the "M-Force", "M-Force Land", or "The Beast"—this 45mm watch pairs a solid stainless steel case with a matte black dial, an impressive bi-directional rotating compass bezel, a high-performance in-house anti-shock automatic movement, a scratch-resistant sapphire crystal with anti-reflective coating, an oversized crown protection shield, a certified 200-meter water resistance rating, and a solid stainless steel construction. Engineered for outdoor adventurers, extreme sports practitioners, and tactical watch enthusiasts who demand ISO-standard durability and unyielding mechanical performance, it commands a powerful presence on any wrist. The defining visual and functional highlight of this RA-AC0N01B reference is its tactical outdoor design, featuring a bi-directional compass bezel designed for land navigation. Set beneath a flat scratch-resistant sapphire crystal with AR coating, the high-contrast black dial features oversized, highly legible hour markers and bold skeletonized hands filled with high-potency LumiBrite for exceptional visibility in low-light environments. A framed date calendar window is positioned neatly at 3 o'clock. The case is flanked at 3 o'clock by Orient's signature M-Force heavy-duty crown protection shield, guarding the screw-down crown against direct impact during rugged outdoor activities. Beneath its armor-like exterior, the watch is driven by Orient's dedicated in-house Caliber F6727 automatic mechanical movement with hand-winding and second-hand hacking capabilities. Specially engineered for the M-Force line to satisfy ISO standards for shock resistance (ISO 1413) and anti-magnetism (ISO 764), this self-winding engine operates at 21,600 vibrations per hour (3 Hz) across 22 jewels, providing a 40-hour power reserve. The case features commanding, tactical proportions, measuring 45.0mm in case width with a case profile thickness of 13.2mm and a lug-to-lug distance of 52.0mm. Dial protection is provided by a scratch-resistant sapphire crystal with an anti-reflective treatment. Engineered for severe environments, land exploration, and water sports, the solid stainless steel case incorporates a screw-down caseback and a protected screw-down crown, achieving a certified 200-meter (20 bar / 660 ft) water resistance rating. The timepiece comes completed on an integrated stainless steel link construction, secured by a solid fold-over deployment clasp with a double push-button safety catch and extension.
