Side by side

Borealis Watch Co. Estoril 300 GMTvsSeiko Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition

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

At a glance

11 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition40mm
Power Reserve
Estoril 300 GMT40h
Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition72h
Water Resistance
Estoril 300 GMT300m
Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition300m
MSRP
Estoril 300 GMT$600
Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition$1,550

Full specifications

Case

4 specs
Diameter
41.50mm
40mm
Thickness
13.5mm
13mm
Lug-to-Lug
47mm
46.4mm
Lug Width
20mm
20mm

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9075
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$600
$1,550

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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.

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.

Seiko Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition

The Seiko Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition is praised for its attractive emerald green sunburst dial with gold accents and its comfortable wearability. Owners note the dial looks gorgeous in the right light, and some find it fits better than other models. The watch features a 40mm steel case, a domed sapphire crystal, and 300m water resistance, powered by the 6R55 movement with a 72-hour power reserve. However, some find the watch wears top-heavy due to its density and case design, and the bracelet clasp is criticized for stamped parts and limited micro-adjustment. The retail price of €1,700 is considered high by some, with sales recommended. Overall, owners and reviewers appreciate the dial's beauty and the watch's comfortable fit, despite some reservations about its weight distribution and bracelet clasp.

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