The Casio Oceanus OCW-S100B-1AJF is a three-hand model from Oceanus, Casio's premium radio-controlled solar line built around the concept of "Elegance, Technology". The all-black design combines black IP-treated titanium with a blue-coated sapphire crystal, evoking the sea just before dawn - a cool, sporty look that works equally well with business attire. Details such as Zaratsu polishing on the case give it a level of finishing well above its class. This is a Japanese domestic market model with a current list price of 85,800 JPY including tax, purchased in July 2026 from an authorized Japanese retailer (purchase receipt included).
[Movement & Technology]
Casio module 5235 with Tough Movement, which automatically corrects the hand positions for accurate display. Tough Solar power runs the watch on light alone, and radio-controlled timekeeping automatically syncs the time and date with standard time signals. The Smart Access electronic crown allows intuitive operation - simply pull and turn the crown to switch world time cities, and the hour, minute, second hands and date drive independently for quick time-zone changes when traveling. The dual-curve sapphire crystal with a blue coating suppresses reflections for excellent legibility.
[Functions]
Radio-controlled time calibration, world time with the city ring on the dial's outer edge, quick home/world time adjustment via the Smart Access crown, date display at 3 o'clock, and luminous hands for visibility in the dark.
[Case & Bracelet]
Black IP-treated titanium case and bracelet - lightweight at approx. 90 g and gentle on the skin. Case dimensions are 45.7 x 41.5 mm (1.8 x 1.63 in) with a slim thickness of 10.5 mm (0.41 in). Fixed bezel, solid screw-fixed case back, and a fold-over clasp. The bracelet fits wrist sizes from approx. 15 to 20.5 cm (5.9 to 8.1 in). Water resistance is rated at 10 bar.
[Condition]
Excellent like-new condition with the original hang tags still attached, as shown in the photos. The case, bracelet, dial, and crystal are all clean with no noticeable scratches. Please note that the Japanese manufacturer warranty is valid in Japan only and not applicable overseas; the warranty card is included for reference.
[Included Items]
Watch, original Oceanus box, spare links, user's guide, warranty card (valid in Japan only), and purchase receipt.
[Shipping]
Ships from Japan with tracking.
Please Note!!
★ Import duties, taxes and customs charges are not included in the item price or the shipping cost. These charges are the buyer's responsibility. Please check with your local customs office to confirm what these additional costs will be before you place an order.
★ This item is also listed on other marketplaces. In the rare event that it sells elsewhere first, we will cancel the order and issue a full refund immediately. Thank you for your understanding.
★ For buyers in the EU and EEA: you have the right to withdraw from this purchase within 14 days of receiving the item, without giving a reason.