Side by side

Oak & Oscar The Olmsted ExP-01vsSeestern S450 Ocean Star

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

The Olmsted ExP-01
Oak & OscarThe Olmsted ExP-01
MSRP $1,775
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

15 of 29 specs differ
Diameter
The Olmsted ExP-0138mm
S450 Ocean Star40mm
Power Reserve
The Olmsted ExP-0142h
S450 Ocean Star41h
Water Resistance
The Olmsted ExP-01100m
S450 Ocean Star100m
MSRP
The Olmsted ExP-01$1,775
S450 Ocean Star$299

Full specifications

Case

5 specs
Category
Field
Diver
Diameter
38mm
40mm
Thickness
10.8mm
12mm
Lug-to-Lug
44.9mm
48mm
Material
316L Heat-treated Stainless Steel
316L Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
Black
White
Lume
Super-LumiNova
Tritium

Movement

5 specs
Caliber
Sellita SW300
TMI NH35A
Beat Rate
4 vph
21,600 vph
Power Reserve
42h
41h
Jewels
25
24
Complications
GMT, Chronograph, Date
GMT, Date

Pricing

1 specs
MSRP
$1,775
$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.

Oak & Oscar The Olmsted ExP-01

Owners widely praise Oak & Oscar The Olmsted ExP-01 for its exceptional finishing, comfortable bracelet, and smooth movement. The dial designs are a frequent point of admiration, with specific appreciation for the white, navy, and gray variants, as well as the orange seconds hand. The watch is considered fairly priced at around $1.5k and is noted for its versatility and "soul." On balance, owners rate Oak & Oscar The Olmsted ExP-01 highly for its overall quality, design, and the brand's customer service.

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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