Side by side

Borealis Watch Co. Estoril 300 GMTvsSugess Seestern S434 Pro Diver

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

Estoril 300 GMT
Borealis Watch Co.Estoril 300 GMT
MSRP $600
Seestern S434 Pro Diver
SugessSeestern S434 Pro Diver
MSRP $249
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Borealis Watch Co. Estoril 300 GMT

Owners widely praise the Borealis Watch Co. Estoril 300 GMT for its excellent value, robust build quality, and crisp dial, with reviewers highlighting its exceptionally bright BGW9 lume and dive-ready ceramic bezel. Some owners appreciate the brushed and polished finishes, though one owner noted a desire for a white-painted second hand. The included NATO strap is considered too thick with a loose weave, and the sapphire bezel insert is seen by some as a minor aesthetic departure from its inspirations. Overall, owners rate the Borealis Watch Co. Estoril 300 GMT highly for its impressive build quality and value.

Sugess Seestern S434 Pro Diver

Owners widely praise the Sugess Seestern S434 Pro Diver for its impressive finishing and craftsmanship at its price point, highlighting the applied indices that play with light, excellent BGW9 lume, and attractive color options. Specific positive notes include the domed sapphire crystal, short lug-to-lug, and on-the-fly clasp adjustment. However, some owners report quality control issues such as misaligned bezels or indices, while others with V2 models experience no such problems. Caveats include slight bezel back play, light AR coating on the crystal, and a clasp that could be smoother, with one owner desiring a color-matched date wheel. On balance, owners rate the Sugess Seestern S434 Pro Diver highly for its exceptional value and build quality, particularly the dial finishing and lume.

At a glance

13 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Seestern S434 Pro Diver40mm
Power Reserve
Estoril 300 GMT40h
Seestern S434 Pro Diver40h
Water Resistance
Estoril 300 GMT300m
Seestern S434 Pro Diver200m
MSRP
Estoril 300 GMT$600
Seestern S434 Pro Diver$249

Full specifications

Case

7 specs
Diameter
41.50mm
40mm
Thickness
13.5mm
12mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
20mm
Material
Stainless Steel
Stainless Steel/Rose Gold
Water Resistance
300m
200m
Caseback
Solid
Engraved

Crystal & Dial

2 specs
Dial Color
Black
2 Salmon
Lume
BGW9
Super-LumiNova BGW9

Movement

3 specs
Caliber
Miyota 9075
NH35
Beat Rate
28,800 vph
3 vph
Complications
None
GMT, Chronograph, Moonphase, Date

Pricing

1 specs
MSRP
$600
$249
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