--- Introduction --- The Seiko Astron line represents the pinnacle of Seiko's solar and radio-controlled technology, and this reference 8B63-0BA0 brings that heritage to a refined, everyday sports design. Housed in a lightweight titanium case and bracelet, it pairs a deep navy-blue dial with a striking blue-and-black UTC world-time ring and a signature blue-accented crown. Light-powered and synchronised by radio signals in Japan, China, the USA and Europe, it offers world time, a day-of-the-week indicator, a 24-hour sub-dial and a date display. Supplied with its Seiko box and instruction booklet, this is a highly practical and handsome example of modern Japanese watchmaking. --- Specifications --- Brand: Seiko Series: Astron Reference: 8B63-0BA0 Movement: Solar-powered radio-controlled quartz, Calibre 8B63 (world time, day indicator, 24-hour sub-dial, date) Case Material: Titanium Crystal: Sapphire (estimated) Dial: Navy blue with applied luminous indices, blue-and-black UTC world-time ring Case Back: Titanium, engraved "Radio Wave Control / World Time / Solar / Water Resistant 10 Bar / Titanium" Bracelet: Original Seiko titanium bracelet with signed folding clasp and push-button release Period: Circa 2021 Country of Origin: Japan --- Condition Report --- Overall: A very good pre-owned example showing only light signs of use, presented together with its original box and instruction booklet. Case & Bezel: The titanium case and polished bezel remain crisp, showing only light signs of use. Dial & Crystal: The navy dial, indices, hands and world-time ring are clean and well preserved; the crystal is clear. Bracelet & Clasp: The titanium bracelet is in good order, and the signed folding clasp closes securely. Functions: The watch has been checked by us and is running, with the hands advancing correctly at the time of listing. The day, date and 24-hour indications are in working order. A service by a qualified watchmaker is recommended at the new owner's convenience, and no guarantee of long-term accuracy or water resistance is given. --- International Shipping & Customs --- The watch is dispatched from Japan with full tracking, carefully packed for international transit. Import duties, taxes and any customs charges levied by the destination country are the sole responsibility of the buyer and are not included in the hammer price or shipping fee. Please check your local import regulations before bidding.