Side by side

Borealis Watch Co. Estoril 300 GMTvsYema Superman Tourbillon CMM.31 Limited 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
Superman Tourbillon CMM.31 Limited Edition
YemaSuperman Tourbillon CMM.31 Limited Edition
MSRP $13,000

At a glance

9 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Superman Tourbillon CMM.31 Limited Edition43mm
Power Reserve
Estoril 300 GMT40h
Superman Tourbillon CMM.31 Limited Edition40h
Water Resistance
Estoril 300 GMT300m
Superman Tourbillon CMM.31 Limited Edition300m
MSRP
Estoril 300 GMT$600
Superman Tourbillon CMM.31 Limited Edition$13,000

Full specifications

Case

4 specs
Diameter
41.50mm
43mm
Thickness
13.5mm
11.7mm
Lug-to-Lug
47mm
Lug Width
20mm
22mm

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Steel
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9075
Yema CMM.31 Tourbillon

Pricing

1 specs
MSRP
$600
$13,000

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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.

Yema Superman Tourbillon CMM.31 Limited Edition

Owners praise the Yema Superman Tourbillon CMM.31 Limited Edition as an incredible and crazy watch, appreciating its unnecessary tourbillon complication and impressive specifications at a remarkable price point. The titanium construction contributes to comfort despite the 43mm case size. One reviewer notes the bracelet clasp's extension system is somewhat crude. On balance, owners and reviewers rate the Yema Superman Tourbillon CMM.31 Limited Edition highly for its compelling tourbillon feature at an accessible price.

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