Tissot Seastar

Most Tissot Seastar references take a 20 mm watch strap: 27 of 98. The lug width follows the case size: 40 mm case → 20 mm, 43 mm case → 21 mm, 46 mm case → 22 mm and 48 mm case → 23 mm.

Shop 18 mm Shop 19 mm Shop 20 mm Shop 21 mm Shop 22 mm

Tissot Seastar lug width by case size

98 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
36 mm	18 mm	9	—	T120-210-11-091-00, T120.210.11.011.00, T120.210.11.041.00
38 mm	18 mm	8	—	T120-217-11-011-00, T120-217-17-041-00, T120.217.11.061.00
40 mm	20 mm	20	—	T120-410-11-091-00, T120-410-22-051-01, T120.410.11.041.00
42 mm	19 mm	5	—	T066.407.11.047.00, T066.407.11.057.00, T066.407.17.047.00
43 mm	21 mm	15	—	T120.407.11.031.00, T120.407.11.041.00, T120.407.11.041.01
46 mm	22 mm · 20 mm on 1	25	—	T120.417.11.041.00, T120.417.11.041.01, T120.417.11.041.02
48 mm	23 mm · 20 mm on 3	13	—	T066.414.17.057.00, T066.427.11.047.00, T066.427.11.047.02
not recorded	20 mm	3	—	T066.407.11.047.02, T066.407.17.057.02, T066.407.17.057.03

References that take a different watch strap

T120.429.11.051.01: 20 mm, not the 22 mm of most 46 mm cases
T066.417.11.047.00: 20 mm, not the 23 mm of most 48 mm cases
T066.417.17.057.00: 20 mm, not the 23 mm of most 48 mm cases
T066.417.17.057.01: 20 mm, not the 23 mm of most 48 mm cases

Questions about the Tissot Seastar

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

No. The lug width changes with the case size: the 36 mm case takes 18 mm, the 40 mm case takes 20 mm, the 43 mm case takes 21 mm, the 46 mm case takes 22 mm and the 48 mm case takes 23 mm. Check your case diameter before you buy.