Official EFS-S550 Series Description. Introducing new EDIFICE solar powered chronographs with sapphire crystals. These new models add highly scratch-resistant sapphire crystals to the EDIFICE solar-powered EFS-S550 Series chronograph, can be charged even by exposure to fluorescent light.
The Scuderia Toro Rosso racing team constantly pushes the limits of speed in order to remain competitive in the world of F1 racing, while EDIFICE develops and incorporates the latest in chronograph technology to make it possible to measure speed. By partnering with Scuderia Toro Rosso, EDIFICE firmly establishes itself as a leading motorsports chronograph.
EFS-S550 Model Range *may be updated
Quick Content Guide
- EFS-S550 Model Range *in different colors and bands
- General information about the watch *year of first release, model range etc.
- Edifice EFS-S550 Display Guide *for key functions only
- Feedback from Users *anonymous from different sources
- The most distinctive specs *from our Editorial point of view
- Other Edifice EFS Watches *similar by price and functions but different by cases
- Edifice EFS-S550 on the wrist! *only images and only on the wrist
- Edifice EFS-S550 Watch Review *our detailed review of the watch
- Official EFS-S550 Specs *all details and for base version EFS-S550DB-1AV
- Japanese approaches to Beautiful and Functional Watches in EFS-S550! *the most distinctive features in details
- EFS-S550 Comparison Table *with similar Edifice Watches
|Price||160$ *average Amazon Price, we may earn commission from purchases|
|Year of First Release||2020|
|Battery Type||Solar powered (Edifice Batteries)|
Edifice EFS-S550 Display Guide *for key functions only. For you to know how it works))
Some water-resistant models (10BAR, 20BAR) have a screw-in crown. When you need to perform a crown operation, rotate it towards you to unscrew it. Then pull the crown out. Avoid applying undue force when pulling.
Rotate the bezel or ring to align its mark with the minute hand. Then you can keep track of how much time has elapsed since you aligned the mark.
The stopwatch measures elapsed time in 1-second increments up to 29 minutes, 59 seconds.
– Do not operate the stopwatch with the crown pulled out.
Feedback from users *accumulated information from our own comments and emails, forum threads, socials, reviews, etc.
+ it looks and feels good
+ relatively less branded (compared to other edifices), dial is mostly about telling time
+ charges quickly
+ power reserve indicator add to its dependability
+ bezel lands on markers accurately and is extremely easy to use
+ seconds hand lands almost perfectly at the seconds markers
+ easy to read, not heavy for wrist
– haven’t found yet
The most distinctive specs of EFS-S550 — Solar Powered Chronograph for Racing Teams
— 100-meter water resistance (good for swimming but not for deep diving)
— Tough Solar (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
— Sapphire crystal (no scratches, no flares)
— Anti-reverse Bezel (enables countdown of the time to the next scheduled event or the time remaining until a task being performed needs to be completed)
Other Edifice EFS Watches *similar by price and functions but different by cases
These are not all Edifice EFS Series. Here is a list of All Edifice EFS Watches →
Edifice EFS-S550 on the wrist!
Enjoy our Edifice EFS-S550 Watch Review
Let’s go back to the bezel. It is massive, pretty, with information indices and a colorful inscription “COUNTDOWN”, which harmoniously combines with other design elements on the dial. The first thing I started to rotate it and, lo and behold, it really rotates with the help of characteristic clicks, and does it only in one direction. This is how the primitive timer function works. Why primitive? Because you do not receive any signal alerts, but simply fix with the bezel the necessary time interval for monitoring. Read Full Review →
Official Marketing Focus from Casio
The EFS-S550 was developed under the guidance of the Scuderia Toro Rosso pit crew. Solar powered operation, highly scratch resistant sapphire crystals, and 100-meter water resistance all combine to make these the ultimate in pit crew chronograph reliability. A countdown bezel also supports crew timekeeping management. It enables countdown of the time to the next scheduled event or the time remaining until a task being performed needs to be completed.
The models in this lineup are available with a choice of yellow, blue, or orange highlight colors, each of which was selected to maximize viewability and sporty looks. There is also a choice of metal, resin, and nylon bands to suit individual preferences for look and fit.
Official EFS-S550 Specs / Features *for base version EFS-S550DB-1AV
- Case / bezel material: Stainless steel
- One-touch 3-fold Clasp
- Stainless Steel Band
- Sapphire Glass with non-reflective coating
- Anti-reverse Bezel
- Black ion plated bezel
- 100-meter water resistance
- Solar powered
- 1-second stopwatch
Measuring capacity: 29’59
Measuring modes: Elapsed time, split time, 1st-2nd place times
- Date display
- Regular timekeeping
Analog: 3 hands (hour, minute, second),
3 dials (24-hour, stopwatch minutes, stopwatch seconds)
- Accuracy: ±20 seconds per month
- Operating time from full charge until hands stop: Approx. 5 months
- Size of case : 50×47×12mm
- Total weight : 153g
Enjoy Japanese approaches to Beautiful and Functional Watches!
Speed & Intelligence. Technologies continue to advance, with EDIFICE leading the way. This multi-function chronograph from CASIO is actively forwarding the evolution of electronic technologies. EDIFICE combines a fusion of dynamic forms with elaborate face designs, and provides leading-edge, accompanied by uniquely original expressions produced by the movements of various hands. These features are transporting the chronograph into new realms, and unlocking the hidden possibilities they contain. EDIFICE, the watch that recognises the value of speed and time, for people who live in the moment!
EDIFICE Design. Bold, fascinating forms and fine details, combined with simple styling that brings out the essence of metal, give birth to products with clearly designed identities.
Drawing and modeling. A prototype is produced based on a sketch using CAD and a 3D printer. A bold design concept takes shape.
Bold index. An edgy, striking large index is laid out on the dial. Robust modeling with straight lines and basic tones evokes a strong presence.
Forged stainless-steel case. After forging and heat treatment of the stainless-steel material, precision machining is conducted to complete the boldly designed case form.
Polished finishing. Polish finishing by the hands of skilled craftsmen produces beautiful mirror surfaces on the forge-cast stainless-steel case.
Tough Solar. This original solar power system transforms even weak light from sources such as fluorescent lamps into ample energy to provide stable operation of various high-load functions.
EFS-S550 Comparison Table with similar Edifice Watches
Year of first Release
±20 seconds per month
±20 seconds per month
±20 seconds per month
Dual time (World Time)
Case / bezel material
Solid stainless steel case
Sapphire crystal with glare-resistant coating
3 years on SR927SW
Size (mm) *we consider 48.9×42.8×13.4 to be a traditional watch size (as in DW-5600). So you are to compare how far or close the watch is to this size
50 × 47 × 12
51 x 45,9 x 12
49 x 43,8 x 10,8
Full features (if you want to know more)
Recent News about EFS-S550
- [Edifice Review] EFS-S550BL-1AV — Functional bezel and sport car style
- [Live Photos] Edifice EFS-S550 — rotary bezel and solar battery
You ask, we answer…
The watch is good for swimming but not for deep diving.
CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power.
It enables countdown of the time to the next scheduled event or the time remaining until a task being performed needs to be completed.
Not sure about EFS-S550? There are more Edifices!