Cartier Ballon Blue de Cartier

Most Cartier Ballon Blue de Cartier references take a 18 mm watch strap: 31 of 40.

Cartier Ballon Blue de Cartier lug width by case size

40 references measured; 12 more have an integrated bracelet. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
37 mm	18 mm · 20 mm on 3	22	—	W2BB0011, W3BB0018, W6900356
40 mm	18 mm · 20 mm on 1	2	—	W6920083
42 mm	18 mm · 20 mm on 5	13	—	W6900551, W69005Z2, W6900651
46 mm	18 mm	3	—	HPI00586, HPI00683, W6920054

References that take a different watch strap

W6920046: 20 mm, not the 18 mm of most 37 mm cases
WE902031: 20 mm, not the 18 mm of most 37 mm cases
WE902075: 20 mm, not the 18 mm of most 37 mm cases
W6920089: 20 mm, not the 18 mm of most 40 mm cases
W2BB0022: 20 mm, not the 18 mm of most 42 mm cases
W69016Z4: 20 mm, not the 18 mm of most 42 mm cases
WGBB0016: 20 mm, not the 18 mm of most 42 mm cases
WGBB0017: 20 mm, not the 18 mm of most 42 mm cases
WSBB0003: 20 mm, not the 18 mm of most 42 mm cases

Questions about the Cartier Ballon Blue de Cartier

Can two Cartier Ballon Blue de Cartier watches with a 37 mm case take different watch straps?

Yes. Of the 22 Cartier Ballon Blue de Cartier references with a 37 mm case, 19 take 18 mm and 3 take 20 mm. The reference number decides, not the case size alone.