Side by side

Bell & Ross BR-05 DiamondvsSeestern S450 Ocean Star

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

BR-05 Diamond
Bell & RossBR-05 Diamond
MSRP $24,829
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

18 of 29 specs differ
Diameter
BR-05 Diamond40mm
S450 Ocean Star40mm
Power Reserve
BR-05 Diamond
S450 Ocean Star41h
Water Resistance
BR-05 Diamond100m
S450 Ocean Star100m
MSRP
BR-05 Diamond$24,829
S450 Ocean Star$299

Full specifications

Case

7 specs
Category
Diver
Thickness
12mm
Lug-to-Lug
48mm
Lug Width
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
White
Indices
Applied indices
Applied
Lume
Super-LumiNova
Tritium

Movement

5 specs
Caliber
BR-CAL.321
TMI NH35A
Beat Rate
21,600 vph
Power Reserve
41h
Jewels
24
Complications
Hours/Minutes, Seconds, Date
GMT, Date

Pricing

1 specs
MSRP
$24,829
$299

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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-05 Diamond

Owners widely praise the Bell & Ross BR-05 Diamond's design and build quality, noting its comfortable wearability and a less derivative appearance in person. The contrast between brushed and polished finishes, along with the blue sunray dial, contributes to its appeal as a versatile integrated steel sports watch. Some owners, however, find the crown to be a bit fussy and criticize the high price relative to the SW300-1 movement. On balance, owners rate the Bell & Ross BR-05 Diamond highly for its striking design and versatile wearability.

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

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