Side by side

Halios Universa IIvsSeiko Prospex Sea

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

Universa II
HaliosUniversa II
MSRP $995
Prospex Sea
SeikoProspex Sea
MSRP $595

At a glance

13 of 29 specs differ
Diameter
Universa II38mm
Prospex Sea41.7mm
Power Reserve
Universa II40h
Prospex Sea41h
Water Resistance
Universa II100m
Prospex Sea200m
MSRP
Universa II$995
Prospex Sea$595

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
38mm
41.7mm
Thickness
11.8mm
12.3mm
Lug-to-Lug
48mm
49.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

3 specs
Crystal
Sapphire (double-domed)
Hardlex
Dial Color
Gold
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW300-1
4R35
Power Reserve
40h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$995
$595

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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.

Halios Universa II

Owners widely praise the Halios Universa II for its applied indices, excellent finishing for the price, and comfortable 38mm dimensions. The integrated bracelet design with a satisfying micro-adjust clasp and case architecture are described as masterclasses. However, some find the bracelet clasp chunkier than the overall design, and the angular lug design is noted as not being for everyone. One owner reported unexpected pastel dial colors and a poor winding action. On balance, owners rate the Halios Universa II highly for its applied indices and excellent finishing at the price point.

Seiko Prospex Sea

Owners and reviewers widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many noting its comfortable wearability and faithful design recreations. Some owners report the watch can feel big, thick, and heavy on smaller wrists, while others find the sizing perfect. The bezel action is frequently highlighted as smooth and precise, often exceeding that of less expensive models. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its impressive finishing and value proposition.

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