| Movement | Solar |
| Case material | Steel |
| Crystal material | Sapphire - anti-reflective |
| Weight | 129 g |
| Waterproof | 100 m |
Movement
Solar
Case material
Steel
Crystal material
Sapphire - anti-reflective
Weight
129 g
Waterproof
100 m
The Casio Edifice Chronograph EFS-S660D-1AEF stands out with its timeless design inspired by the world of motorsports. It also features a compact design with a 38 mm case, ideal even for smaller wrists. Thanks to its combination of design and features, it makes for a great watch for everyday wear.
The Casio Edifice EFS-S660D-1A stands out with its sporty yet clean and functional design, featuring a barrel-shaped case with sharper lines that houses a black textured dial, complemented by bold hands and applied hour markers. It is protected by a sapphire crystal with an anti-reflective coating to improve readability in direct light. The watch case is made of stainless steel and is complemented by a tapered steel bracelet, which makes the watch very comfortable on the wrist.
The watch is equipped with a date window at the 3 o’clock position and a stopwatch function, the operation of which is displayed on two easy-to-read sub-dials—a minute counter and a seconds counter. The stopwatch can be operated using the side pushers—the upper one starts and stops the stopwatch, while the lower one resets the measured values. The watch can measure intervals of up to one hour with an accuracy of 1/20 of a second and record the times for first and second place. The connection to the world of speed is further underscored by the tachymeter scale around the dial, which can be used to calculate average speed based on the measured time.
The watch hands are coated with a luminescent layer, ensuring better readability in low-light conditions.
This model is water-resistant to 100 m —so you can swim with the watch without worry. A key feature of the watch is its solar power, which recharges the watch’s battery using light. The battery has a longer lifespan than a standard battery, eliminating the need for regular replacement every 2–3 years. The watch alerts you to a low battery level by causing the second hand to tick at longer intervals.
If you’re looking for a simple and timeless sports watch, suitable as a versatile accessory for everyday use, the Casio Edifice Chronograph EFS-S660D-1AEF—with a case diameter of 38.3 mm and a case thickness of just 11.6 mm —is definitely a great choice.
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Print size patterns
(For printing set - Scale: Default)
| Brand | Casio |
| Gender | Male |
| Style | Sports |
| Origin | Japanese |
| Guarantee | 5 years |
| Waterproof | 100 m |
| Weight | 129 g |
| Movement | Solar |
| Caliber | 5334 |
| Movement accuracy in seconds | ±20 sec. / month |
Power Reserve ![]() |
5 months |
Stopwatch measurement accuracy ![]() |
1/20 sec. |
| Case size | 38,3 mm |
Lug-to-lug: ![]() |
45,3 mm |
| Case height | 11,6 mm |
| Case shape | Barrel |
| Case material | Stainless steel |
| Case color | Silver |
| Crystal material | Sapphire - anti-reflective |
| Dial | Analog |
| Dial color | Black |
| Strap material | Stainless steel |
Buckle ![]() |
Push Button Deployant Clasp |
| Strap color | Silver |
| Date | Yes |
Stopwatch ![]() |
Yes |
| Functions | Date, Stopwatch |
Accumulator ![]() |
Yes |
Luminescence ![]() |
Hands |
| Other functions | Split times, 1st and 2nd place times, Battery status indication |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 200 CZK on Watch purchase.
Guarantor: Kateřina Žváček
Jiří Štencek
+420 252 252 306
Mo-Th 9-19
Fr-Sa 9-16
info@helveti.eu
The product is included in categories
Men's steel watches Men's watches with stopwatch Men's Japanese watch Men's silver watches Men's sports watches Men's watches under 200 EUR Men's watches with date Men’s Watches Casio Men's black watches Men's solar watches Men's watches under 400 EUR Men's watches novelties Edifice Men’s watches Casio Edifice Men's watches with steel bracelet Men's watches with sapphire crystal Casio
Casio, Japan is one of the best-selling watch brands in the world. The first watches from the Casia workshop were digital and at the same time the first in the world to display the date. Casio's digital watches are no longer popular today, although analog watches or watches with a combined time display already form a large part of the range.
Casio has made history with its range of super-durable G-Shock watches, which are equipped with a light but sufficiently durable construction (against falls of up to 10 m, shocks, vibrations, magnetic field and temperature fluctuations) and a great value for money. The glory of the G-Shock watch over time also required a lightweight women's version - Baby-G. The Casio Pro Trek or Casio Edifice outdoor watches are also very popular. Casio does not lag behind in modern technology either, as evidenced by models equipped with Bluetooth technology, the Tough Solar solar drive or the high-precision radio-controlled Wave Ceptor watch.
Helveti.eu is an authorized dealer and specialist of the Casio brand.
Manufacturer information: CASIO Europe GmbH, Casio-Platz 1 D-22848 Norderstedt, Germany / info@casio.de
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1 → We check, clean and set
We will check the functionality, set time, date and clean the watch carefully.
2 → We will carefully pack the watch
So that the watch does not have a chance to be damaged. We use special vacuum pads.
3 → We insure the watch against damage from the carrier
To be sure, we will insure the watch against breakage, so there is nothing to fear.
With each watch, you will receive a gift of your choice from us. Gifts are graduated according to the value of the order.
From €0 = Cleaning cloth, with which you can polish the glass of a watch.
From €100 = Stroke shortener, you can adjust the watch bracelet to your hand.
From €150 = Helveti canvas bag.
From €150 = Credit card knife.
From €170 = Donut watch case.
From €400 = Parker Jotter.
From €600 = knife Mikov 100-NH-2A blue.
From €1000 = Victorinox Waiter knife with 9 functions.
From €1400 = Watchroll for 2pcs.
From €1650 = Helveti leather watch roll.
From €2000 = Leather travel case.
From €2800 = Leatherman REV.
From €4000 = Wooden watch box Helveti.
From €6000 = Watch winder Helveti black.
And on top of that, a 5-year warranty (You can find the terms of the extended warranty here) and free shipping.
You can view the gifts here: