Side by side

Bell & Ross BR-X3 TOURBILLON MICRO-ROTORvsBremont Supermarine 300M

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
Supermarine 300M
BremontSupermarine 300M
MSRP $3,550

At a glance

17 of 29 specs differ
Diameter
BR-X3 TOURBILLON MICRO-ROTOR40mm
Supermarine 300M40mm
Power Reserve
BR-X3 TOURBILLON MICRO-ROTOR52 hoursh
Supermarine 300M40h
Water Resistance
BR-X3 TOURBILLON MICRO-ROTOR50m
Supermarine 300M300m
MSRP
BR-X3 TOURBILLON MICRO-ROTOR$96,120
Supermarine 300M$3,550

Full specifications

Case

7 specs
Category
Skeleton
Diver
Thickness
9mm
12mm
Lug Width
20mm
Material
Stainless Steel
904L Stainless Steel
Finish
Brushed and polished
Water Resistance
50m
300m
Caseback
Solid

Crystal & Dial

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

Movement

5 specs
Caliber
BR-CAL.389
BE-92AE
Beat Rate
28,800 vph
Power Reserve
52 hoursh
40h
Jewels
25
Complications
Hours/Minutes, Tourbillon
None

Pricing

1 specs
MSRP
$96,120
$3,550

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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.

Bremont Supermarine 300M

The Bremont Supermarine 300M is praised for its comfortable 40mm and 42mm case sizes, with owners noting the 42mm wears well on smaller wrists due to its lug design. One owner highlights the 13mm thinness of the 40mm case, considered compact for a 300m diver. The watch is priced at $1375. On balance, owners and reviewers appreciate the Bremont Supermarine 300M for its wearability and compact dimensions, especially for a dive watch.

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