Side by side

Oris Big Crown ProPilot Big Day DatevsBremont ALT1-C

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
ALT1-C
BremontALT1-C
MSRP $6,150

At a glance

16 of 29 specs differ
Diameter
Big Crown ProPilot Big Day Date44mm
ALT1-C43mm
Power Reserve
Big Crown ProPilot Big Day Date38 hoursh
ALT1-C40h
Water Resistance
Big Crown ProPilot Big Day Date100m
ALT1-C100m
MSRP
Big Crown ProPilot Big Day Date$2,900
ALT1-C$6,150

Full specifications

Case

6 specs
Category
Pilot
Chronograph
Diameter
44mm
43mm
Thickness
16mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Blue
Regular length (15cm - 19cm wrist size)
Indices
Applied

Movement

5 specs
Caliber
752
BE-50AE
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
$6,150

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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.

Bremont ALT1-C

Owners widely praise the Bremont ALT1-C for its flawless brushed case finish, attractive cream dial with excellent contrast from anthracite sub-dials, and comfortable, balanced wearability. The watch features a well-finished strap and a movement that is a joy to wind, with precise chronograph operation. Reviewers note refined feuille hands and polished Arabic numerals with a golden tinge, balancing ruggedness with elegance. The Bremont ALT1-C averages +3 seconds per day, though one reviewer flags its 16mm height as less than ideal for under-cuff wear and describes the date window as narrow. The modified Valjoux 7750 movement's rotor spin is noticeable. Overall, owners rate the Bremont ALT1-C highly for its refined aesthetics and enjoyable user experience.

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