BR 03 Black Steel
Ref. BR03A-BL-ST/SRB
- Case diameter
- 41 mm
- Manufacturer spec
- Lug-to-lug
- 41 mm
- Unverified
- Thickness
- 9.7 mm
- Unverified
- Lug width
- 24 mm
- Unverified
Retail price $3,990 (US, Oct 2026)
How the BR 03 Black Steel wears
Its lugs add only 0 mm to the 41 mm case, against 7 mm typical across the almanac, so it wears smaller than its diameter suggests.
On our fit model it sits best on wrists from 5.75" to 6.75" (14.6–17.1 cm); below 5.75" the lugs start to reach the edge of the wrist.
At 9.7 mm thick it is thicker than 81% of the 47 other rectangular watches we've measured, so expect it to sit tall on the wrist.
Its 24 mm lug width is less common (4 other watches here), so check strap sizes carefully.
Will the BR 03 Black Steel fit your wrist?
With a 41 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.
| Wrist | Flat width (est.) | Fit |
|---|---|---|
| 6" | 47.2 mm | Ideal fit |
| 6.5" | 51.2 mm | Ideal fit |
| 7" | 55.1 mm | Wears small |
| 7.5" | 59.1 mm | Wears small |
| 8" | 63 mm | Wears small |
Specifications
- Reference
- BR03A-BL-ST/SRB
- Collection
- BR 03
- Status
- In production
- Introduced
- 2023
- Case material
- stainless steel
- Crystal
- sapphire
- Water resistance
- 100 m
- Bezel
- fixed square bezel with four screws
- Dial
- black
- Strap / bracelet
- black rubber strap
- Style
- Rectangular, Sport, Everyday
Movement
- Caliber
- Bell & Ross BR-CAL.302
- Type
- automatic
- Power reserve
- 54 hours
- Frequency
- 28,800 vph (4 Hz)
Takes 24 mm straps. See other 24 mm watches and straps.
More BR 03 references
Watches that wear the same size
Other watches within 1.5 mm of its lug-to-lug.
- BulovaSutton Rectangular96B442
- Case
- 29 mm
- Lug-to-lug
- 41 mm
- Thick
- 6 mm
- CartierTank Must Extra-Large (automatic)WSTA0141
- Case
- 31 mm
- Lug-to-lug
- 41 mm
- Thick
- 8.4 mm
- CasioMTP-B190DMTP-B190D-1BV
- Case
- 31.5 mm
- Lug-to-lug
- 41 mm
- Thick
- 8.1 mm
- OmegaConstellation 39131.10.39.20.02.001
- Case
- 39 mm
- Lug-to-lug
- 41 mm
- Thick
- 12.4 mm
- TimexMarlin 1965 Reissue Hand-Wound 34mmTW2R47900
- Case
- 34 mm
- Lug-to-lug
- 41 mm
- Thick
- 10 mm
- FarerLander IV GMT 36mmW-LCL
- Case
- 36 mm
- Lug-to-lug
- 41.2 mm
- Thick
- 11 mm
Same 24 mm lug width
All 24 mm watchesThese take the same straps as the BR 03 Black Steel.