Side by side

Gruppo Gamma Peacemaker BronzevsSeestern S450 Ocean Star

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

Peacemaker Bronze
Gruppo GammaPeacemaker Bronze
MSRP $990
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

15 of 29 specs differ
Diameter
Peacemaker Bronze43mm
S450 Ocean Star40mm
Power Reserve
Peacemaker Bronze42h
S450 Ocean Star41h
Water Resistance
Peacemaker Bronze200m
S450 Ocean Star100m
MSRP
Peacemaker Bronze$990
S450 Ocean Star$299

Full specifications

Case

6 specs
Diameter
43mm
40mm
Thickness
13mm
12mm
Lug-to-Lug
52.5mm
48mm
Lug Width
24mm
20mm
Material
Bronze
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Fume Green
White
Lume
Super-LumiNova
Tritium

Movement

5 specs
Caliber
ETA 2824-2
TMI NH35A
Beat Rate
28,800 vph
21,600 vph
Power Reserve
42h
41h
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$990
$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.

Gruppo Gamma Peacemaker Bronze

Owners widely praise the Gruppo Gamma Peacemaker Bronze for its strong vintage aesthetic, featuring attractive sandwich dials and high-domed or box-shaped sapphire crystals. The bronze case is noted for developing patina and the watch is generally considered a good value. Accuracy figures vary, with one report of approximately +10 seconds per day and others stating +/-12 seconds per day. Power reserves range from 38 to 45 hours depending on the movement. One owner describes the winding action as a "dream." On balance, owners consider the Gruppo Gamma Peacemaker Bronze a well-built watch offering significant vintage appeal and value.

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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