Bell & Ross Instruments

Most Bell & Ross Instruments references take a 24 mm watch strap: 18 of 39. The lug width follows the case size: 39 mm case → 20 mm, 40 mm case → 20 mm and 45 mm case → 24 mm.

Shop 20 mm Shop 22 mm Shop 24 mm

Bell & Ross Instruments lug width by case size

39 references measured; 17 more have an integrated bracelet. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
39 mm	20 mm · 22 mm on 3	16	—	BRS-BL-CEM, BRS-BL-CMAT/SRB, BRS-HERI-CEM
40 mm	20 mm · 22 mm on 2	4	—	BR05A-GR-SK-ST/SRB, BR05A-GR-SK-ST/SST
45 mm	24 mm	17	—	BRX1-AL-TI-BLU, BRX1-CE-CF-BLACK, BRX1-CE-CF-RS16
46 mm	20 mm · 24 mm on 1	2	—	BR0192-10TH-CE

References that take a different watch strap

BRS-WHGOLD-IVORY_D: 22 mm, not the 20 mm of most 39 mm cases
BRS92RUSTSCR: 22 mm, not the 20 mm of most 39 mm cases
BRSBLCPHLGDSRB: 22 mm, not the 20 mm of most 39 mm cases
BR05A-BL-PG/SRB: 22 mm, not the 20 mm of most 40 mm cases
BR05A-BLU-SKST/SST: 22 mm, not the 20 mm of most 40 mm cases
BR01-TOURB-AIRBORN: 24 mm, not the 20 mm of most 46 mm cases

Questions about the Bell & Ross Instruments

Do all Bell & Ross Instruments case sizes take the same watch strap?

No. The lug width changes with the case size: the 39 mm case takes 20 mm and the 45 mm case takes 24 mm. Check your case diameter before you buy.

Can two Bell & Ross Instruments watches with a 39 mm case take different watch straps?

Yes. Of the 16 Bell & Ross Instruments references with a 39 mm case, 13 take 20 mm and 3 take 22 mm. The reference number decides, not the case size alone.