Casio
Casio W-800H Strap Size — 18mm Lug Width
The Casio W-800H has a 18mm lug width, so it takes a 18mm watch strap.
Lug width18mm
| Lug width | 18 mm |
|---|---|
| Case size | 36.8 mm |
| Lug-to-lug | 44.2 mm |
| Thickness | 13.4 mm |
| Spring bar Ø (typical) | Not confirmed |
| End type | Straight |
Strap styles that fit
- NATO / Zulu18mm fits if the strap's thickness clears the case under the bars.
- PerlonWoven pass-through, 18mm.
- 2-piece leatherStraight ends fit flush.
- Rubber / siliconeDivers & sports fit well.
- Milanese / meshStraight-end 18mm mesh fits.
- Metal braceletNeeds 18mm end-links shaped for this case.
▲ 18mm at the lugs; some listings quote the wider buckle end.
Fit & sizing notes for the W-800H
- Width: buy 18mm straps. Tapered straps listed as 18/16mm or 18/14mm fit too; only the first number has to match. See strap sizes explained.
- Spring bars: 18mm long. We haven't confirmed the diameter for this model, so measure the old bar before buying replacements (spring bar sizes).
- Wrist fit: at 44.2mm lug-to-lug it should sit within the top of wrists from about 14.7cm up (rule of thumb: lug-to-lug under ~30% of wrist size). That's longer than 12% of the watches in our index. See what size watch suits your wrist.
- Strap thickness: at 13.4mm thick it's a chunky case: thicker padded leather, rubber/FKM or a heavier NATO balance it visually; very thin straps can look undersized.
Sources & corrections
Lug width checked against: Casio UK: W-800H-1AVES; Equipo: straps for Casio W-800 range. Last checked 24 October 2026.
Spec wrong for your watch? Send us a correction with your reference number.
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Casio W-800H — strap questions
What size strap does the W-800H take?
The Casio W-800H has a 18mm lug width, so you need a 18mm watch strap.
Will any 18mm strap fit the W-800H?
Most will. Width is the main thing to match, but also check that the strap's spring-bar holes suit the bars, and that the strap is thin enough to clear the case between the lugs. A metal bracelet needs 18mm end-links made for this model.
What spring bar size does the W-800H use?
18mm long. We haven't confirmed the diameter for the W-800H, so measure the original bar with calipers before buying replacements.
Is the W-800H good for strap swapping?
Yes. With standard 18mm spring-bar lugs, NATO, leather, rubber and mesh straps can all be fitted with a spring-bar tool.