Casio EDIFICE Watch EFS-S660D-1AEF

Introducing the Casio Edifice EFS-S660D-1AEF, a 38 mm solar chronograph that proves elegance and technology can coexist in perfect balance. The first impression is of a watch built with clear visual logic: the octagonal stainless steel case with brushed flanks and polished edges forms a harmonious whole with the integrated bracelet, where the satin-finished center of each link contrasts with the polished outer edges. The bezel features a perimeter tachymeter scale engraved in black with white numerical indices running around the full circumference.

The dark anthracite grey dial houses three subdials seamlessly integrated at 12, 9, and 6 o clock, each with a slightly deeper black background than the main dial to create depth without visual noise. The main hands are silver with luminous fill, and the chronograph seconds hand features a striking electric blue tip that delivers the only touch of color in an otherwise composed and refined composition. Applied rectangular silver indices mark the hours, and a clean date window sits at 3 o clock.

Inside, the EFS-S660D-1AEF houses a Casio solar quartz module with precision chronograph function. The three subdials display chronograph minutes at 12, running seconds at 9, and a secondary hour function at 6. The sapphire crystal with anti-reflective treatment is the most scratch-resistant material Casio uses across the Edifice reference lineup. Solar charging ensures continuous autonomy without battery changes under normal use conditions. Water resistance reaches 100 meters, suitable for everyday wear, swimming, and water activities. The steel bracelet with double-push safety clasp completes an ensemble that requires no additional strap: it is born integrated, as one single piece.

The Edifice collection was born from Casio's vision of creating high-performance analog watches for the active professional man. Inspired by speed, precision engineering, and the world of motorsport, Edifice has evolved since its origins in the 1990s to become a reference in the segment of sport steel watches with chronograph functions. The EFS-S660D represents the most refined line of the collection: no superfluous ornamentation, compact 38 mm proportions that allow it to slide under a shirt cuff, and the sapphire crystal as a quality differentiator over other references in the range.

Shopping at TicTacArea.com means buying from real jewelers with over 30 years of industry experience, serving as official distributors, online since 1999. Every product is genuine, factory-new, and delivered with its official presentation box, documentation, and international warranty.

Technical Specifications

Reference: EFS-S660D-1AEF
Collection: Edifice
Module/Caliber: 5334
Type: Analog
Movement: Solar quartz
Water resistance: 100 meters
Case material: Stainless steel
Case color: Silver, brushed with polished edges
Bracelet/Strap material: Stainless steel
Bracelet/Strap color: Silver, mixed polished and brushed finish
Dial color: Dark anthracite grey with black subdials
Crystal: Sapphire with anti-reflective coating
Illumination: Luminous hands
Diameter: 38.0 mm
Thickness: Not specified
Weight: Not specified
Functions: Hours, minutes, seconds, date, chronograph, tachymeter, solar charging
Power source: Solar (photovoltaic cell)
Bezel: Engraved tachymeter
Made for: Men