Side by side

Seestern S450 Ocean StarvsNodus Sector II Dive GMT

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Sector II Dive GMT
NodusSector II Dive GMT
MSRP $575

At a glance

13 of 29 specs differ
Diameter
S450 Ocean Star40mm
Sector II Dive GMT38mm
Power Reserve
S450 Ocean Star41h
Sector II Dive GMT41h
Water Resistance
S450 Ocean Star100m
Sector II Dive GMT100m
MSRP
S450 Ocean Star$299
Sector II Dive GMT$575

Full specifications

Case

4 specs
Diameter
40mm
38mm
Thickness
12mm
11.9mm
Lug-to-Lug
48mm
47mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Flat
Box
AR Coating
Inner
Yes
Dial Color
White
Lume
Tritium
Swiss Super-LumiNova® BGW9 Grade A

Movement

4 specs
Caliber
TMI NH35A
TMI NH34 (GMT)
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
41h
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$575

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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.

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.

Nodus Sector II Dive GMT

Owners widely praise the Nodus Sector II Dive GMT for its solid build, bracelet, and fit and finish for the price, with reviewers noting its well-executed finishing featuring alternating brushed and polished surfaces. The regulated Seiko NH34 movement is reported to run at +5 seconds per day. Some owners desire a Miyota 9075 movement and lume on the GMT hand, and a reviewer finds the 120-click dive bezel less ideal for GMT functions than a bi-directional 48-click GMT bezel, while the dial's dense Arabic numerals can be overwhelming for some despite good legibility. On balance, owners and reviewers rate the Nodus Sector II Dive GMT highly for its attractive design and build quality at its price point.

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