Breitling Transocean

Most Breitling Transocean references take a 22 mm watch strap: 199 of 245. The lug width follows the case size: 38 mm case → 20 mm, 43 mm case → 22 mm and 46 mm case → 24 mm.

Shop 20 mm Shop 22 mm

Breitling Transocean lug width by case size

245 references measured. Updated 2026-11-03.

Case	Lug width	References	Watch strap attachment	For example
38 mm	20 mm	9	—	A1631012/A764/171A, A1631012/BD15/171A, A1631012/G781/171A
43 mm	22 mm · 20 mm on 3	202	—	A1036012/BA91/154A, A1036012/BA91/435X/A20BA.1, A1036012/BA91/743P/A20BA.1
46 mm	24 mm	34	—	AB0510U0.A732.152A, AB0510U0.A732.441X, AB0510U0.A732.756P

References that take a different watch strap

AB015112/BA59/154A: 20 mm, not the 22 mm of most 43 mm cases
AB015412.G784.154A: 20 mm, not the 22 mm of most 43 mm cases
AB045112.G772.739P: 20 mm, not the 22 mm of most 43 mm cases

Questions about the Breitling Transocean

Do all Breitling Transocean case sizes take the same watch strap?

No. The lug width changes with the case size: the 38 mm case takes 20 mm, the 43 mm case takes 22 mm and the 46 mm case takes 24 mm. Check your case diameter before you buy.