Description
The Casio Edifice EFV-630D-1A (also referenced as EFV-630D-1AV / EFV-630D-1AVDF) is a refined, high-precision Japanese quartz chronograph designed for men by Casio under the speed-and-intelligence-inspired Edifice lineup. Recognized among watch collectors and daily-wear enthusiasts by its series nicknames—the "Classic Mid-Size Chronograph" or "Black Dial Sports Chronograph"—this 43.9mm timepiece pairs a solid stainless steel case with a multi-layered matte black dial, a date calendar window at 3 o'clock, a screw-lock back plate, and a solid stainless steel construction. Designed for modern gentlemen who appreciate classic motorsport aesthetics, versatile mid-sized proportions, and reliable Japanese craftsmanship, it transitions seamlessly from formal workplace attire to casual weekend wear. The defining visual highlight of this EFV-630D-1A reference is its clean black dial face framed by a sleek stainless steel bezel. Set beneath a protective mineral crystal, the dial features bold dimensional hour markers with luminous coating for low-light legibility, three dedicated chronograph sub-dials positioned at 6, 9, and 12 o'clock, and a framed calendar date window at 3 o'clock. The monochrome black, polished stainless steel, and high-contrast white index accents deliver a dynamic, sophisticated look on the wrist. Beneath its refined exterior, the watch is driven by a high-accuracy Japanese Quartz Movement powered by an SR920SW silver oxide battery, providing a reliable battery life of approximately 3 years with a timekeeping precision within ±20 seconds per month. The integrated 1/10-second chronograph offers measuring capacities up to 59 minutes and 59.9 seconds with dedicated timing modes for elapsed time, split time, and 1st-2nd place finishes. The well-proportioned round housing measures 43.9mm in case width (48.9mm lug-to-lug) with a profile thickness of 11.0mm and a total weight of approximately 130 grams, delivering an ideal ergonomic balance on the wrist. Dial protection is provided by a durable, scratch-resistant mineral crystal. Engineered for everyday durability and water activities, the solid stainless steel case incorporates a screw-lock back plate and protective crown guards, achieving a certified 100-meter (10 bar / 330 ft) water resistance rating to safeguard against daily rain, splashes, showering, and swimming. The timepiece comes completed on an integrated stainless steel link construction, secured by a solid one-touch 3-fold deployment clasp with a safety release mechanism.
