Side by side

Oris Big Crown ProPilot Big Day DatevsBorealis Watch Co. Estoril 300 GMT

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

Big Crown ProPilot Big Day Date
OrisBig Crown ProPilot Big Day Date
MSRP $2,900
Estoril 300 GMT
Borealis Watch Co.Estoril 300 GMT
MSRP $600

At a glance

19 of 29 specs differ
Diameter
Big Crown ProPilot Big Day Date44mm
Estoril 300 GMT41.50mm
Power Reserve
Big Crown ProPilot Big Day Date38 hoursh
Estoril 300 GMT40h
Water Resistance
Big Crown ProPilot Big Day Date100m
Estoril 300 GMT300m
MSRP
Big Crown ProPilot Big Day Date$2,900
Estoril 300 GMT$600

Full specifications

Case

8 specs
Category
Pilot
Diver
Diameter
44mm
41.50mm
Thickness
13.5mm
Lug-to-Lug
47mm
Lug Width
22mm
20mm
Finish
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Blue
Black
Indices
Applied
Lume
None
BGW9

Movement

5 specs
Caliber
752
Miyota 9075
Beat Rate
4 vph
28,800 vph
Power Reserve
38 hoursh
40h
Jewels
26
25
Complications
Date, Day
None

Pricing

1 specs
MSRP
$2,900
$600

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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.

Oris Big Crown ProPilot Big Day Date

Owners and reviewers widely praise the Oris Big Crown ProPilot Big Day Date for its excellent legibility, clear dial with large numerals, and fine brushed finishing on the case and bracelet. The turbine-style bezel and instrument-inspired hands are frequently highlighted as unique design elements. However, several owners report that the lume fades quickly and the Sellita SW220-1 movement can be noisy, running approximately +10 seconds per day, though one owner reported +8 seconds per day and another noted accuracy of +2s/d on a different model. The bracelet clasp is described as having limited adjustment, and attaching or detaching the bracelet can be difficult due to tight tolerances, with some owners finding the 45mm case size too large for smaller wrists. Overall, owners and reviewers appreciate the Oris Big Crown ProPilot Big Day Date for its strong legibility and distinctive pilot watch design at its price point.

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.

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