Introduction This is a Seiko Chronograph quartz wristwatch featuring a deep green sunburst dial with gold-toned applied baton indices, a tachymeter bezel, and three sub-dials — a 60-minute chronograph counter at the 9 o'clock position, a 24-hour indicator at the 3 o'clock position, and a running seconds sub-dial at the 6 o'clock position — alongside a date window at the 4:30 position. The case is stainless steel measuring 40 mm in diameter, paired with a dark brown crocodile-pattern leather strap and a Seiko-signed deployant clasp. The movement is the quartz caliber 8T63, made in Japan and cased in China, as confirmed by the exterior caseback stamps. Historical / Era context The 8T63 caliber is Seiko's in-house quartz chronograph movement, offering analogue chronograph functions with a 24-hour sub-dial — a combination that positions this watch firmly within Seiko's modern sport-chronograph tradition. The green dial treatment, with its rich sunburst finish and gold-toned accents, reflects a contemporary aesthetic direction that has made this reference highly sought after among Seiko enthusiasts. This example is a Japanese domestic market piece, supplied complete with its original Seiko box and Japanese guarantee card. Condition The watch is running and keeping good time. The watch was checked running at the time of listing with a fresh battery. Battery life and long-term accuracy are not guaranteed. As a vintage timepiece it may benefit from a service. Case: The stainless steel case and caseback show light handling marks and minor surface scratches consistent with careful use, but no deep gouges, dents, or corrosion. The lugs and bezel retain their polished and brushed finishes well. The deployant clasp is clean and functions correctly. Dial: The green sunburst dial is in excellent condition — all printing is crisp and legible, the sub-dial tracks are clean, and there are no stains, fading, or damage visible. The gold-toned applied indices and hands are intact with no losses. Crystal: The mineral crystal is clear and free from cracks, chips, or significant scratches. Movement: The watch is running. It is powered by the quartz caliber 8T63, movement made in Japan; the caseback is solid and the movement is not visible without opening it. Accessories: Supplied with the original Seiko box and Japanese guarantee card (保証書). No additional links or tools are included. Band: the original leather strap is fitted to the watch. Please review all photographs carefully for the detailed condition. Specifications Brand: Seiko Model: SEIKO CHRONOGRAPH Reference: 8T63-00D0 Movement: Quartz (quartz) Case material: Stainless steel Case diameter: approx. 20 mm Dial color: Green Band: Original leather strap (fitted) Period: 2010-2020 Accessories: Original box, Japanese guarantee card (保証書) In working order: Yes Timekeeping: keeping good time (checked running with a fresh battery) Closing note A striking and complete example of Seiko's green-dial 8T63 chronograph, desirable for its rich dial colour, full-size 40 mm case, and Japanese domestic provenance with original packaging. Please examine all photos carefully before bidding. As with all vintage timepieces, please examine the provided photographs carefully to satisfy yourself with the condition before bidding. The watch is sold as a vintage collectible; water resistance and future maintenance are not guaranteed. The item is carefully packed and shipped from Japan with tracking. Import duties, taxes and customs charges are the buyer's responsibility.