Side by side

Oris Big Crown ProPilot Big Day DatevsAera Instruments M-1

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
M-1
Aera InstrumentsM-1

At a glance

19 of 29 specs differ
Diameter
Big Crown ProPilot Big Day Date44mm
M-139mm
Power Reserve
Big Crown ProPilot Big Day Date38 hoursh
M-142h
Water Resistance
Big Crown ProPilot Big Day Date100m
M-1100m
MSRP
Big Crown ProPilot Big Day Date$2,900
M-1—

Full specifications

Case

7 specs
Category
Pilot
—
Diameter
44mm
39mm
Thickness
—
13.14mm
Lug-to-Lug
—
47.6mm
Lug Width
22mm
20mm
Finish
—
Brushed and polished
Caseback
—
Solid

Crystal & Dial

5 specs
Crystal Shape
—
Flat
AR Coating
Underside
Inner
Dial Color
Blue
Dune
Indices
—
Applied
Lume
None
Super-LumiNova

Movement

6 specs
Caliber
752
Sellita SW216-1
Type
Automatic
Manual
Beat Rate
4 vph
28,800 vph
Power Reserve
38 hoursh
42h
Jewels
26
25
Complications
Date, Day
None

Pricing

1 specs
MSRP
$2,900
—

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