Certina DS First

Most Certina DS First references take a 18 mm watch strap: 12 of 40. The lug width follows the case size: 35 mm case → 17 mm, 38 mm case → 19 mm and 41 mm case → 22 mm.

Shop 18 mm Shop 19 mm Shop 20 mm Shop 22 mm

Certina DS First lug width by case size

40 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
35 mm	17 mm · 18 mm on 8 · 20 mm on 1	19	—	C0142171101100, c0142171101101, C0142171105101
38 mm	19 mm	5	—	C030.250.11.056.00, C030.250.11.106.00, C030.250.16.106.00
41 mm	22 mm · 18 mm on 4 · 20 mm on 3	16	—	C0144101105100, C0144101601100, C0144101605100

References that take a different watch strap

C0142351101101: 18 mm, not the 17 mm of most 35 mm cases
C0142351105101: 18 mm, not the 17 mm of most 35 mm cases
C0142351701100: 20 mm, not the 17 mm of most 35 mm cases
C0142351705100: 18 mm, not the 17 mm of most 35 mm cases
C0142353301100: 18 mm, not the 17 mm of most 35 mm cases
C0142353601100: 18 mm, not the 17 mm of most 35 mm cases
C0142353605100: 18 mm, not the 17 mm of most 35 mm cases
C0142353701100: 18 mm, not the 17 mm of most 35 mm cases
C0142353705100: 18 mm, not the 17 mm of most 35 mm cases
C0144071105100: 20 mm, not the 22 mm of most 41 mm cases
C0144071108101: 18 mm, not the 22 mm of most 41 mm cases
C0144071603100: 18 mm, not the 22 mm of most 41 mm cases
C0144071605100: 20 mm, not the 22 mm of most 41 mm cases
C0144072203100: 20 mm, not the 22 mm of most 41 mm cases
C0144072208100: 18 mm, not the 22 mm of most 41 mm cases
C0144072608100: 18 mm, not the 22 mm of most 41 mm cases

Questions about the Certina DS First

Do all Certina DS First case sizes take the same watch strap?

No. The lug width changes with the case size: the 35 mm case takes 17 mm, the 38 mm case takes 19 mm and the 41 mm case takes 22 mm. Check your case diameter before you buy.

Can two Certina DS First watches with a 35 mm case take different watch straps?

Yes. Of the 19 Certina DS First references with a 35 mm case, 10 take 17 mm, 8 take 18 mm and 1 take 20 mm. The reference number decides, not the case size alone.