[Introduction] The Seiko Chronograph 100M is a versatile and robust timepiece that blends sporty functionality with a modern urban aesthetic. This model features a sleek black dial accented by vibrant green minute markers, providing excellent legibility and a unique personality. Equipped with a reliable quartz movement, it offers precise timekeeping alongside a practical triple-register chronograph layout and a tachymeter scale on the bezel. With its balanced proportions and classic stainless steel construction, this watch is an ideal companion for both active lifestyles and professional environments. [Historical & Collector Value] Seiko’s "6T" series movements are celebrated for their reliability and user-friendly operation, representing the brand’s excellence in affordable quartz technology. The 6T63 caliber is particularly appreciated for its "mecha-quartz" style feel, where the chronograph hands snap back to zero instantly upon resetting. As a part of Seiko's extensive chronograph heritage, this reference is a popular choice for those entering the world of Japanese watch collecting, offering the perfect entry point into a brand world-renowned for its vertical integration and engineering prowess. Specifications ◇Brand: Seiko ◇Model: Chronograph 100M ◇Reference: 6T63-00D0 ◇Case size: 40mm (excluding crown) ◇Movement: Quartz (Caliber 6T63) ◇Case material: Stainless Steel ◇Dial: Black with Green Accents ◇Functions: Chronograph, Date, 24-hour indicator, Tachymeter ◇Bracelet / Strap: Seiko Original Stainless Steel Bracelet ◇Clasp: Folding Clasp with Push-button Release ◇Water resistance: 10 Bar (100 meters) ◇Country of manufacture: Japan (Movement) ・Condition The watch is in clean overall condition with light signs of normal wear. The stainless steel case and bracelet show minor surface marks consistent with careful use. The black dial and hands are in excellent condition. The crystal is clear, and all chronograph functions operate smoothly. ・Service History The watch has been checked for basic operation and is functioning correctly at the time of listing. As this is a quartz timepiece, it is powered by a battery. Future battery replacements may be required depending on usage and the buyer’s standards. ・Shipping & Customs The item will be carefully packed and shipped from Japan. International shipping is available. Please note that any customs duties, taxes, or import fees are the sole responsibility of the buyer.