Breitling Chronomat 40 GMT

Every Breitling Chronomat 40 GMT reference takes a 20 mm watch strap: all 61 we measured.

Shop 20 mm

Breitling Chronomat 40 GMT lug width by case size

61 references measured. Updated 2026-11-10.

CaseLug widthReferencesWatch strap attachmentFor example
40 mm20 mm61—A32398101A1A1, A32398101B1A1, A32398101C1A1

Every Breitling Chronomat 40 GMT reference