Side by side

Seiko Prospex SeavsTudor Pelagos Ultra

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent value, solid build, and comfortable wearability, with specific mentions of its matte black dial, excellent lume, and cushion case that wears smaller than its dimensions suggest. The 4R36 movement is noted for hacking and hand-winding capabilities, and the bezel action is described as smooth and precise. Some owners find the watch to be a legitimate tool with a fair price, while others describe it as big, thick, and heavy, uncomfortable for smaller wrists, though this is subjective as one owner found the size perfect. The solar quartz movement is also highlighted as a collection-worthy feature. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and comfortable, classic design.

Tudor Pelagos Ultra

The Tudor Pelagos Ultra is praised for its 1000 meters of water resistance, METAS-certified Calibre MT5612-U movement, and fully lumed dial and bezel. Reviewers highlight its titanium case and self-adjusting clasp as key features. The Tudor Pelagos Ultra is slightly larger at 43mm than some other models in the line but wears comfortably. Overall, owners and reviewers rate the Tudor Pelagos Ultra highly for its technical specifications and comfortable wearability as a flagship dive watch.

From video reviewers

The Tudor Pelagos Ultra's all-titanium construction provides a lightweight and durable case. One weakness is the lack of lume brightness. Reviewers disagree on whether the helium release valve is a notable feature or a drawback for a more streamlined design.

At a glance

15 of 29 specs differ
Diameter
Prospex Sea42mm
Pelagos Ultra40mm
Power Reserve
Prospex Sea72h
Pelagos Ultra65h
Water Resistance
Prospex Sea300m
Pelagos Ultra1,000m
MSRP
Prospex Sea
Pelagos Ultra$6,900

Full specifications

Case

8 specs
Diameter
42mm
40mm
Thickness
13.3mm
14.5mm
Lug-to-Lug
48.6mm
0mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Finish
Satin
Water Resistance
300m
1000m
Caseback
Solid screw-down

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
6R54
MT5612-U
Power Reserve
72h
65h
Jewels
24
0

Pricing

1 specs
MSRP
$6,900
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