Side by side

Bell & Ross BR-X3 TOURBILLON MICRO-ROTORvsTudor Black Bay One 31 S&G

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

BR-X3 TOURBILLON MICRO-ROTOR
Bell & RossBR-X3 TOURBILLON MICRO-ROTOR
MSRP $96,120
Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850

At a glance

18 of 29 specs differ
Diameter
BR-X3 TOURBILLON MICRO-ROTOR40mm
Black Bay One 31 S&G31mm
Power Reserve
BR-X3 TOURBILLON MICRO-ROTOR52 hoursh
Black Bay One 31 S&G50h
Water Resistance
BR-X3 TOURBILLON MICRO-ROTOR50m
Black Bay One 31 S&G100m
MSRP
BR-X3 TOURBILLON MICRO-ROTOR$96,120
Black Bay One 31 S&G$6,850

Full specifications

Case

8 specs
Category
Skeleton
Diameter
40mm
31mm
Thickness
9mm
9.5mm
Lug-to-Lug
46mm
Lug Width
17mm
Finish
Polished + Satin
Water Resistance
50m
100m
Caseback
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Skeleton
Black
Indices
Applied

Movement

5 specs
Caliber
BR-CAL.389
MT5201
Beat Rate
28,800 vph
Power Reserve
52 hoursh
50h
Jewels
25
Complications
Hours/Minutes, Tourbillon
None

Pricing

1 specs
MSRP
$96,120
$6,850

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Bell & Ross BR-X3 TOURBILLON MICRO-ROTOR

The Bell & Ross BR-X3 TOURBILLON MICRO-ROTOR is noted for its comfortable 40mm square case with well-rounded edges and a bold, artistic design. Reviewers highlight its wearable case that seamlessly integrates with the strap and a well-executed dial structure. The watch features a Kenissi-manufactured calibre with a 70-hour power reserve and COSC certification, though one source notes the absence of hour markers on the dial. The BR-X3 TOURBILLON MICRO-ROTOR is priced at $7,200 USD. Overall, reviewers praise the Bell & Ross BR-X3 TOURBILLON MICRO-ROTOR for its comfortable wearability and artistic dial execution.

Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G is praised for its quiet luxury, combining brushed steel and warm gold accents for understated charm. Owners appreciate the brushed gold for a casual two-tone look and the champagne dial's surprising legibility. Some find the case sides too thick, and one user expressed a desire for a smaller S&G variant. The watch features the MT5612 movement with a 70-hour power reserve and a date function, within a 200-meter water-resistant case. Overall, owners and reviewers highlight the Tudor Black Bay One 31 S&G's balanced two-tone aesthetic as its primary appeal.

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