- Solar powered Charged by light – no battery changes
- Chronograph Stopwatch for precise timing
- Sapphire crystal Virtually scratch-proof glass
Casio Edifice EFS-S660D-1AEF • Men's Watch
Silver • Sapphire Crystal • Solar Chronograph
Model: EFS-S660D-1AEF
excl. VATplus £11.25 shippingImport VAT and any duties are payable by you on delivery.
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Casio Edifice
Description
The Casio Edifice EFS-S660D-1AEF is a solar-powered chronograph that combines motorsport aesthetics with functional precision in a slim stainless steel case. With a case diameter of just 38.3 mm and overall dimensions of 45.3 × 38.3 × 11.6 mm, the watch sits comfortably on the wrist and impresses with its clean, understated design. The dial features a refined textured finish that allows sufficient light to reach the built-in solar cell for continuous charging, ensuring reliable long-term operation without battery replacement.
A central seconds hand enables precise time measurement to 1/20 of a second. The tachymeter scale on the bezel allows average speed calculations. The premium sapphire crystal with anti-reflective coating protects the dial from scratches and glare. A stainless steel bracelet with a triple-folding one-touch clasp and water resistance to 10 bar complete the package for active wearers. The stopwatch measures elapsed time, split time, and the times of the first two finishers.
Key Features of the Casio EFS-S660D-1AEF Watch
- Solar power with low-charge warning: Reliable energy supply via solar charging, with a low-battery alert and an operating time of approximately 5 months from full charge to hand standstill.
- Sapphire crystal with anti-reflective coating: Premium crystal protection for optimal legibility and outstanding scratch resistance in everyday use and sport.
- 1/20-second stopwatch with tachymeter: Precise chronograph with three measurement modes and a tachymeter bezel for calculating average speeds.
Care instructions
Care Instructions for Wristwatches
Care & Cleaning
- Daily: Wipe case and bracelet with a soft, dry cloth to remove dirt and perspiration.
- Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
Important: Screw down the crown firmly beforehand!!! - Not water-resistant: Clean only dry or slightly damp, do not use water or cleaning agents.
- Avoid: Harsh chemicals, perfume, cosmetics and heat.
- Leather straps: Do not soak, clean only slightly damp and allow to dry away from heat.
- Water resistance: Do not wear in the shower or bath, have it checked annually.
- Battery (quartz): Have a depleted battery replaced immediately.
- Mechanical watches: Service by a master watchmaker every 5 years.
Storage & Handling
- Store the watch separately, not in direct contact with other jewellery (risk of scratching).
- When winding mechanical watches, lay them down; do not leave the crown pulled out.
Specifications
All details of the Casio EFS-S660D-1AEF at a glance.
Basic data
- Target group
- Men
- Manufacturer
- Casio
- Model series / Collection
- Edifice
- Model number
- EFS-S660D-1AEF
- EAN / GTIN
- 4549526431005
- Display type
- Analogue
- Water resistance in bar
- 10
- Colour
- Silver
- Other features
- Tachymeter, 1/20-sec. stopwatch (split time, elapsed time, 1st-2nd place times), battery indicator/low battery warning, solar charging
Case & Construction
- Case material
- Stainless steel
- Case colour
- Silver
- Case diameter in mm
- 38,3
- Case shape
- Round
- Case height in mm
- 11,6
- Weight
- 129 g
- Bezel material
- Tachymeter
- Watch glass
- Sapphire crystal
Dial & Display
- Dial colour
- Silver
- Second hand
- Yes
Movement & Drive
- Drive type / Movement
- Solar
- Date display
- Yes
- Stopwatch function
- Yes
Strap & Clasp
- Strap material
- Stainless steel
- Strap colour
- Silver
- Clasp
- Folding clasp
- Max. wrist circumference
- 20.5 cm
Questions about this product?
We're happy to help.Prefer to talk? Call us:+49 (0) 5405 80 444 60 Mon–Fri 8:30 am–3:30 pm (CET)Shipping & returns
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Returns
You have 100 days to try your order at your leisure. If something isn't right, simply send it back.
Casio – Functional Watches for Modern Everyday Life
Casio became known in the 1970s for wristwatches that redefined technology and everyday usability. Digital displays, innovative functions, and robust construction made the brand popular worldwide.
To this day, Casio wristwatches stand for reliability and practical use. They are aimed at people who value functionality, durability, and a clear price-performance ratio.
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Should the item not fit perfectly, take advantage of our generous 100-Day Returns – uncomplicated and free of charge. Experience for yourself why over 13,000 customers have found their timepieces with us.
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