Certina · DS Spel
Strap for Certina DS Spel C0121094411100
The DS Mini Spell Lady Shape takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
- 4.8 out of 5 · 269 reviews
- Ships in 1–3 working days
- Worldwide shipping
- 30-day returns
- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

Straps for the DS Spel C0121094411100
Selected for the 18 mm lug width · workshop selection
What length do I need?
Measure your wrist with a tailor's tape or a piece of string, comfortably snug.
| Wrist circumference | Length (long side / short side) |
|---|---|
| 15.0–16.4 cm | 110 / 70 mm |
| 16.5–17.8 cm | 115 / 75 mm |
| 17.9–19.0 cm | 120 / 80 mm |
| 19.1–20.4 cm | 125 / 80 mm |
| 20.5–21.6 cm | 130 / 85 mm |
| 21.7–22.9 cm | 135 / 85 mm |
| over 22.9 cm | on request |
The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.
What I'm asked about the Certina DS Spel C0121094411100
What strap size does the Certina DS Spel C0121094411100 take?
The Certina DS Spel C0121094411100 needs 18 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Certina DS Spel C0121094411100 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Certina DS Spel C0121094411100?
Yes, in 18 mm leather. On a case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Certina DS Spel C0121094411100?
A 18 mm calf strap, for every day. You'll find it ready in the 18 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More DS Spel
- DS Mini Spell Lady Shape20 mm
- DS Mini Spell Lady Shape18 mm
- DS Mini Spell Lady Shape20 mm
- DS Mini Spell Lady Shape20 mm
- DS Spel Lady Round Black10.5 mm
- DS Spel Lady Round10.5 mm
- DS Spel Lady Round11 mm
- DS Spel Lady Round11 mm
All DS Spel → Certina families →
Every DS Spel reference with its measured lug width, on watchbands.ai →
More Certina in 18 mm
- DS Prime Chronograph SilverDS Prime
- DS Prime Chronograph BlackDS Prime
- DS Prime Chronograph WhiteDS Prime
- DS Prime Chronograph BlackDS Prime
- DS Prime Chronograph BrownDS Prime
- DS Prime Chronograph DiamondDS Prime
For changing the strap
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
The atelier's website: casatimilano.com





