Illustration. The seconds hand ticks, as most quartz movements do.
Edifice Slim Sapphire
Ref. EFR-S108D-1AV
Also EFR-S108D-1AVUEF
Black hairline dial, yellow seconds hand, octagonal bezel, steel bracelet
- Diameter
- 39.9 mm
- Thickness
- 7.8 mm
- Water
- 100 m
- Movement
- Module 5359
€129
Price at Helveti, an EU dealer. Casio's European shop blocked automated access, so the official RRP wasn't confirmed.
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- 0 reviews
Why it's interesting
It borrows the flat octagonal bezel of far pricier luxury sports watches, but the real surprise is underneath the styling: a 7.8 mm case and a sapphire crystal at this price. A slim, quiet everyday watch that slides under a cuff and doesn't need babying.
Watch DNA. Filled tags are editorial; outlined tags come from the specifications.
The numbers
Verified specificationsSize
- Diameter
- 39.9mm
- Lug to lug
- 44.8mm
- Thickness
- 7.8mm
- Lug width
- —
Because you like this…
Chosen for shape, size, colour, character and price. Rarely the same brand twice.
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About this page
Verified specifications, checked September 2026
Dimensions, water resistance, movement and crystal were checked against the sources below.
casio.com returned 403 to every regional page. Case 44.8 × 39.9 × 7.8 mm, 110 g, sapphire with non-reflective coating, 100 m, ±20 s/month and SR916SW cell come from Casio's spec text reproduced by Timekeeper (Thai Casio dealer), matched by Mastersintime and Helveti. Module 5359 per Mastersintime and CasioFan Magazine's manual index. Casio HK's own EFR-S108D-1AV page shows chronograph specs copied from a different model, so it wasn't used. Lug width left blank: the bracelet is integrated and Mastersintime's figures (22 mm strap width, 16 mm 'lug width') contradict each other. Launch year not confirmed. The four screws on the bezel's diagonal facets are not drawn (the renderer's screwed octagon always has eight).
