[Introduction] The Casio Oceanus is a masterpiece of high-end Japanese watchmaking, blending advanced electronics with an exceptionally refined aesthetic. This "Tough Solar" model features a lightweight titanium case and bracelet finished in a sophisticated black ion plating, offering superior durability and a modern, stealthy look. The striking blue ring under the sapphire crystal provides the signature "Oceanus Blue" glow, framing a clean dial designed for maximum legibility. Equipped with atomic timekeeping and world time functionality, this timepiece is built for the global traveler who demands absolute precision and understated luxury. [Historical & Collector Value] As part of Casio's premium Oceanus line, the OCW-T100 series represents the brand's commitment to "Elegance and Technology." It showcases the innovative "Tough Movement," which automatically corrects hand positioning if displaced by impact or magnetism. Collectors value this specific all-black variant for its refined "Made in Japan" construction and its role in establishing Oceanus as a high-tier competitor in the global luxury quartz market. Its combination of maintenance-free solar power and multi-band 6 radio-controlled accuracy makes it a benchmark for high-performance functional art. Specifications ◇Brand: Casio ◇Model: Oceanus Classic Line ◇Reference: OCW-T100 ◇Case size: 40 mm ◇Movement: Solar Quartz (Tough Solar / Multi-Band 6) ◇Case material: Titanium (Black Ion Plating) ◇Dial: Black with Oceanus Blue accents ◇Crystal: Sapphire with non-reflective coating ◇Functions: Radio-controlled (Global), World Time, Perpetual Calendar, Power Saving, Hand Position Correction ◇Bracelet / Strap: Titanium (Black Ion Plating) ◇Clasp: One-touch 3-fold Clasp ◇Water resistance: 10 BAR ◇Country of manufacture: Japan ・Condition The watch is in well-preserved condition with signs of normal use. The black ion plating on the titanium case and bracelet shows light surface wear and minor scuffs consistent with careful ownership. The sapphire crystal is exceptionally clean, and the "Oceanus Blue" inner ring remains vibrant. Overall, it maintains a sharp, professional, and sophisticated appearance. ・Service History The watch has been checked for basic operation and is functioning accurately at the time of listing. As a solar-powered radio-controlled timepiece, it provides maintenance-free precision. Future maintenance may be required depending on usage and the buyer’s standards. ・Shipping & Customs The item ships from Japan, carefully packed to ensure safe arrival. International shipping is available. Please note that customs duties, taxes, and related charges are the buyer’s responsibility and are not included in the item price.