Side by side

Borealis Watch Co. Estoril 300 GMTvsMaen Skymaster 38 MKIII

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
Skymaster 38 MKIII
MaenSkymaster 38 MKIII
MSRP $1,679

At a glance

12 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Skymaster 38 MKIII38mm
Power Reserve
Estoril 300 GMT40h
Skymaster 38 MKIII40h
Water Resistance
Estoril 300 GMT300m
Skymaster 38 MKIII100m
MSRP
Estoril 300 GMT$600
Skymaster 38 MKIII$1,679

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
41.50mm
38mm
Thickness
13.5mm
13.4mm
Lug-to-Lug
47mm
Lug Width
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
M6.1.1
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9075
Sellita SW510mb

Pricing

1 specs
MSRP
$600
$1,679

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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.

Maen Skymaster 38 MKIII

The Maen Skymaster 38 MKIII is praised for its refined case, impressive fit and finish, and compact 38mm size, which offers a premium feel with a sharp, legible dial and well-executed applied markers. Reviewers note the sweet winding action and the vintage-inspired brown sunburst dial with dauphine hands and lollipop register pointers. The watch is powered by a manual-wind Sellita SW510Mb movement with a 63-hour power reserve. Accuracy figures vary, with one reviewer reporting +7 seconds per day and another stating a tolerance of +/-15 seconds per day. On balance, owners and reviewers appreciate the Maen Skymaster 38 MKIII for its refined vintage-inspired design and compact dimensions at its price point.

From video reviewers

The 38mm case size is a key strength for the Maen Skymaster 38 MKIII. Reviewers noted the excellent quality-price ratio for a Swiss-made chronograph.

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