Side by side

Oris ProPilot X Calibre 400 LaservsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

ProPilot X Calibre 400 Laser
OrisProPilot X Calibre 400 Laser
MSRP $5,750

At a glance

18 of 29 specs differ
Diameter
ProPilot X Calibre 400 Laser39mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
ProPilot X Calibre 400 Laser120 hoursh
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
ProPilot X Calibre 400 Laser100m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
ProPilot X Calibre 400 Laser$5,750
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

8 specs
Category
Diver
Diameter
39mm
44mm
Thickness
13mm
Lug-to-Lug
49.3mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
200m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Black
Indices
Applied
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
400
8L35
Beat Rate
4 vph
28,800 vph
Power Reserve
120 hoursh
50h
Jewels
21
26

Pricing

1 specs
MSRP
$5,750
$3,300

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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 ProPilot X Calibre 400 Laser

The Oris ProPilot X Calibre 400 Laser is praised for its high-tech laser-etched titanium dial and the advanced Calibre 400 movement with a 120-hour power reserve. However, the dial's unique rainbow gradient is polarizing, with one owner finding it childish and preferring applied indices for better legibility and lume, while reviewers note the case shape may still require adjustment. The CHF 4,800 price is also flagged as steep for a time-only watch. On balance, owners and reviewers acknowledge the innovative dial and movement, but opinions are divided on its aesthetic appeal and value proposition.

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive, well-made design and gorgeous dial, noting its jewel-toned teal color and rippling-water pattern. The bezel action is smooth with a muted sound, and the case and bracelet offer a more comfortable feel than previous iterations. However, multiple owners express disappointment with the accuracy of the 6R movement at its price point, with some noting theirs runs slow, and consider the price too high. The steep rehaut and marker size make the 24-hour numbers difficult to read, and some find the case design makes the watch feel top-heavy despite wearing smaller. Overall, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined case design, despite concerns regarding movement accuracy at its price.

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