Tissot PRX

Most Tissot PRX references take a 12 mm watch strap: 38 of 56. The lug width follows the case size: 25 mm case → 8 mm, 35 mm case → 10 mm, 40 mm case → 12 mm and 41 mm case → 13 mm.

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Tissot PRX lug width by case size

56 references measured; 25 more have an integrated bracelet. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
25 mm	8 mm	6	—	T137.010.11.056.00, T137.010.11.111.00, T137.010.11.351.00
35 mm	10 mm · 11 mm on 3	6	—	T137.263.11.030.00, T137.263.11.050.00, T137.263.33.020.00
38 mm	11 mm	1	—	T137-807-96-081-00
40 mm	12 mm	37	—	T137.407.11.041.00, T137.407.11.041.02, T137.407.11.051.00
41 mm	13 mm · 12 mm on 1	4	—	T1374171103100, T1374171104100, T1374171105100
42 mm	13 mm · 20 mm on 1	2	—	T1374271104101

References that take a different watch strap

T931.207.41.031.01: 11 mm, not the 10 mm of most 35 mm cases
T931.207.41.111.00: 11 mm, not the 10 mm of most 35 mm cases
T931.207.41.336.00: 11 mm, not the 10 mm of most 35 mm cases
T137.907.97.201.00: 12 mm, not the 13 mm of most 41 mm cases
T137.427.11.041.00: 20 mm, not the 13 mm of most 42 mm cases

Questions about the Tissot PRX

Do all Tissot PRX case sizes take the same watch strap?

No. The lug width changes with the case size: the 25 mm case takes 8 mm, the 35 mm case takes 10 mm and the 40 mm case takes 12 mm. Check your case diameter before you buy.