[Introduction] The Seiko Chronograph 100M presents a commanding blend of tactical engineering, high-performance timekeeping, and bold sports styling. This timepiece features a deep black dial with a balanced three-sub-dial layout, prominent luminescent hour markers, and a date window angled between 4 and 5 o'clock. Encircled by an integrated tachymeter scale inner ring and a distinctively sculpted stainless steel bezel, this watch delivers exceptional structural durability and aesthetic power perfect for active lifestyle tracking and everyday wear. [Historical & Collector Value] Seiko’s legacy in sports timing is internationally renowned, with its quartz chronographs celebrated for delivering mechanical-like precision and extreme reliability. This model is driven by the high-grade Caliber 6T63 quartz movement, highly respected by enthusiasts for its crisp, positive pusher engagement and smooth sweeping stopwatch hand that emulates a traditional mechanical chronograph. Featuring a solid stainless steel construction, screw-down caseback, and a robust 10 bar water resistance, this discontinued reference 6T63-00G0 is valued by collectors who appreciate Seiko's superior sport-utility engineering and functional watch design. Specifications ◇Brand: Seiko ◇Model: Chronograph 100M ◇Reference: 6T63-00G0 ◇Case size: 40 mm (excluding crown) ◇Movement: Chronograph Quartz (Caliber 6T63) ◇Case material: Stainless steel ◇Dial: Black with three sub-dials and date window ◇Functions: Hours, minutes, small seconds, 60-minute chronograph, 24-hour display, tachymeter, date ◇Bracelet / Strap: Seiko original stainless steel bracelet ◇Clasp: Three-fold clasp with push-button release and Seiko branding ◇Water resistance: 10 bar (100 m) ◇Country of manufacture: Japan ・Condition Clean overall condition with light signs of age and normal wear. The stainless steel case and bracelet display minor hairline scratches from normal use, retaining their factory contours well. The black dial, sub-dials, and hands remain sharp, crisp, and free of discoloration. ・Service History The watch has been checked for basic operation and is functioning with a working battery at the time of listing. As with any pre-owned watch, future maintenance may be required depending on usage and the buyer’s standards. ・Shipping & Customs The item ships from Japan, carefully packed and insured. International shipping is available. Any customs duties, taxes, or import fees incurred at the destination country are the sole responsibility of the buyer.