Oris BC4
Most Oris BC4 references take a 22 mm watch strap: 32 of 37. The lug width follows the case size: 42 mm case → 22 mm, 43 mm case → 22 mm and 45 mm case → 24 mm.
Oris BC4 lug width by case size
37 references measured. Updated 2026-10-29.
| Case | Lug width | References | Watch strap attachment | For example |
|---|---|---|---|---|
| 42 mm | 22 mm | 11 | — | 01 643 7617 4764, 01 645 7617 4154, 01 645 7617 4164 |
| 43 mm | 22 mm | 20 | — | 01 643 7617 4764-07 5 22 58BFC, 01 645 7617 4154-07 5 22 58FC, 01 645 7617 4154-07 8 22 58 |
| 45 mm | 24 mm · 22 mm on 1 | 6 | — | 01 653 7631 4684-Set, 01 674 7633 4764, 01 674 7633 4764-07 5 24 58BFC |
References that take a different watch strap
- 01 653 7631 4684: 22 mm, not the 24 mm of most 45 mm cases
Questions about the Oris BC4
Do all Oris BC4 case sizes take the same watch strap?
No. The lug width changes with the case size: the 42 mm case takes 22 mm, the 43 mm case takes 22 mm and the 45 mm case takes 24 mm. Check your case diameter before you buy.
Every Oris BC4 reference
- BC4 01 643 7617 476401 643 7617 4764
22 mm - BC4 Small Second Day DLC / Black01 643 7617 4764-07 5 22 58BFC
22 mm - BC4 01 645 7617 415401 645 7617 4154
22 mm - BC4 Small Second Pointer Day Stainless Steel / Black01 645 7617 4154-07 5 22 58FC
22 mm - BC4 Small Second Pointer Day Stainless Steel / Black / Bracelet01 645 7617 4154-07 8 22 58
22 mm - BC4 01 645 7617 416401 645 7617 4164
22 mm - BC4 Small Second Pointer Day Stainless Steel / Black01 645 7617 4164-07 5 22 58FC
22 mm - BC4 Small Second Pointer Day Stainless Steel / Black / Bracelet01 645 7617 4164-07 8 22 58
22 mm - BC4 01 645 7617 417401 645 7617 4174
22 mm - BC4 Small Second Pointer Day Stainless Steel / Black01 645 7617 4174-07 5 22 58FC
22 mm - BC4 Small Second Pointer Day Stainless Steel / Black / Bracelet01 645 7617 4174-07 8 22 58
22 mm - BC4 01 649 7632 416401 649 7632 4164
22 mm - BC4 Der Meisterflieger Stainless Steel / Black01 649 7632 4164-Set LS
22 mm - BC4 Der Meisterflieger Stainless Steel / Black / Bracelet01 649 7632 4164-Set MB
22 mm - BC4 01 653 7631 468401 653 7631 4684
22 mm - BC4 Blue Eagles01 653 7631 4684-Set
24 mm - BC4 01 674 7616 415401 674 7616 4154
22 mm - BC4 Chronograph Stainless Steel / Black01 674 7616 4154-07 5 22 58FC
22 mm - BC4 Chronograph Stainless Steel / Black / Bracelet01 674 7616 4154-07 8 22 58
22 mm - BC4 01 674 7616 428401 674 7616 4284
22 mm - BC4 4E RHFS01 674 7616 4284-Set
22 mm - BC4 01 674 7633 476401 674 7633 4764
24 mm - BC4 Chronograph DLC / Black01 674 7633 4764-07 5 24 58BFC
24 mm - BC4 01 674 7633 479401 674 7633 4794
24 mm - BC4 Chronograph DLC / Black01 674 7633 4794-07 5 24 58BFC
24 mm - BC4 01 690 7615 415401 690 7615 4154
22 mm - BC4 Flight Timer Stainless Steel / Black01 690 7615 4154-Set LS
22 mm - BC4 Flight Timer Stainless Steel / Black / Bracelet01 690 7615 4154-Set MB
22 mm - BC4 01 690 7615 416401 690 7615 4164
22 mm - BC4 Flight Timer Stainless Steel / Black01 690 7615 4164-07 5 22 58FC
22 mm - BC4 Flight Timer Stainless Steel / Black / Bracelet01 690 7615 4164-07 8 22 58
22 mm - BC4 01 735 7617 416401 735 7617 4164
22 mm - BC4 Retrograde Day Stainless Steel / Black01 735 7617 4164-07 5 22 58FC
22 mm - BC4 Retrograde Day Stainless Steel / Black / Bracelet01 735 7617 4164-07 8 22 58
22 mm - BC4 01 749 7632 419401 749 7632 4194
22 mm - BC4 Der Meisterflieger Stainless Steel / Black01 749 7632 4194-Set LS
22 mm - BC4 Der Meisterflieger Stainless Steel / Black / Bracelet01 749 7632 4194-Set MB
22 mm
Other Oris families
Inside each one the lug width often changes: it is the reference that decides.
- Artelier 492
- Aquis 368
- Big Crown 332
- ProPilot 222
- Divers 65 220
- Classic 155
- Rectangular 122
- Divers 109
- Artix GT 80
- Artix 78
- Williams 72
- BC3 45
All Oris families → · Why the size changes inside a family →