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Hamilton Frogman

Most Hamilton Frogman references take a 20 mm watch strap: 11 of 22. The lug width follows the case size: 41 mm case → 20 mm, 42 mm case → 20 mm, 43 mm case → 22 mm and 46 mm case → 22 mm.

Shop 20 mmShop 22 mm

Hamilton Frogman lug width by case size

22 references measured. Updated 2026-10-30.

CaseLug widthBuckle widthReferencesWatch strap attachmentFor example
40 mm20 mm—1—H77445533
41 mm20 mm—4—H77455330, H77455331, H77455360
42 mm20 mm—6—H77605135, H77605335, H77705145
43 mm22 mm—5—H77716333, H77716533, H77746133
46 mm22 mm20 mm6—H77805335, H77805380, H77815130

Questions about the Hamilton Frogman

Do all Hamilton Frogman case sizes take the same watch strap?

No. The lug width changes with the case size: the 42 mm case takes 20 mm, the 43 mm case takes 22 mm and the 46 mm case takes 22 mm. Check your case diameter before you buy.

What buckle width does the Hamilton Frogman 46 mm take?

20 mm. The watch strap is 22 mm at the case and narrows to 20 mm at the buckle.

Every Hamilton Frogman reference

Other Hamilton families

Inside each one the lug width often changes: it is the reference that decides.

All Hamilton families → · Why the size changes inside a family →