Side by side

Halios Universa IIvsSeiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

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

Universa II
HaliosUniversa II
MSRP $995
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 Seiko Diver’s Watch 60th Anniversary Limited Edition

The Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition features a 40mm case, 300m water resistance, and a 72-hour power reserve from the Calibre 6R55 movement, distinguished by a grey bezel insert and a wave-patterned silvery-white dial. The clasp includes an improved diving suit extension. Owners note the MarineMaster case is comfortable and wearable. However, some owners criticize the 6R54 movement's accuracy, reporting deviations of +25/-15 seconds per day, and find the production number too large for a "limited" edition, deeming it too expensive. On balance, owners rate the Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition positively for its comfortable case and attractive dial, despite concerns regarding its price and movement accuracy.

At a glance

15 of 29 specs differ
Diameter
Universa II38mm
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition40mm
Power Reserve
Universa II40h
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition72h
Water Resistance
Universa II100m
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition300m
MSRP
Universa II$995
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition$1,400

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
38mm
40mm
Thickness
11.8mm
13mm
Lug-to-Lug
48mm
46.4mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

5 specs
Crystal
Sapphire (double-domed)
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Gold
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW300-1
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$995
$1,400
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