Description
The Casio Edifice EFS-S650DC-1A (also referenced as EFS-S650DC-1AEF / EFS-S650DC) is a high-performance, Japanese-engineered solar quartz chronograph designed for men by Casio under the speed-and-intelligence-inspired Edifice series. Recognized among watch collectors and motorsport enthusiasts by its series nicknames—the "Ceramic Bezel Solar" or "Black Ceramic Solar Chronograph"—this 39.5mm timepiece marks a milestone as the very first Edifice model featuring a polished ceramic bezel ring. Pairing a stealthy dark black ion-plated stainless steel case with a patterned black dial, a scratch-resistant sapphire crystal with anti-reflective coating, a solar-powered movement, a date display, and a solid black ion-plated stainless steel construction, it offers an exceptional blend of luxury sports car aesthetics and long-lasting durability. The defining visual highlight of this EFS-S650DC-1A reference is its lustrous, scratch-resistant black ceramic bezel, which evokes the mirror-like finish of high-end luxury sports cars. Set beneath a premium flat sapphire crystal with anti-reflective coating, the detailed black dial features fine patterned printing, dimensional hour indices, luminous-coated hands for clear low-light legibility, three recessed chronograph sub-dials, a battery level indicator, and a framed calendar date display. The monochrome black stealth aesthetic delivers a refined, high-contrast look that transitions effortlessly from formal business attire to active weekend wear. Beneath its sleek exterior, the timepiece is driven by a high-efficiency Casio Solar Powered Quartz Movement that converts ambient light from sunlight or fluorescent lamps into energy, eliminating the need for routine battery replacements. Operating on a full charge, the watch runs for approximately 5 months without further light exposure and incorporates a built-in battery level indicator and low-battery warning. The integrated 1-second chronograph provides precision timing capacities up to 29 minutes and 59 seconds alongside a 24-hour timekeeping sub-dial. Engineered with versatile, modern proportions, the flat round housing measures a highly wearable 39.5mm in case width (45.0mm lug-to-lug) with a comfortable profile thickness of 10.8mm and a total weight of approximately 135 grams. Superior dial protection is provided by a high-grade Scratch-Resistant Sapphire Crystal with anti-reflective inner coating. Engineered for daily water activities, the solid stainless steel case features a dark black ion-plated (IP) finish, a screw-lock back plate, and a protective crown guard, achieving a certified 100-meter (10 bar / 330 ft) water resistance rating to safeguard against daily rain, splashes, showering, and swimming. The watch comes completed on an integrated black ion-plated stainless steel link construction, secured by a solid one-touch 3-fold deployment clasp.
