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Seiko Prospex Sea 1968 Heritage Diver's GMTvsZelos Nova 37

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

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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.

Seiko Prospex Sea 1968 Heritage Diver's GMT

The Seiko Prospex Sea 1968 Heritage Diver's GMT is widely praised for its build quality, finishing, and comfortable wearability, offering good value for its price point. Owners and reviewers highlight the attractive silver/white sunray dial, blue ceramic bezel, and the premium feel of the improved bracelet clasp with excellent micro-adjustment. The Caliber 6R54 movement provides a 72-hour power reserve, and real-world accuracy often exceeds its stated range of +25 to -15 seconds per day, with some owners reporting figures around +3 to +5 seconds per day. However, the caller-style GMT functionality is a point of contention for some, who find the GMT scale difficult to read and prefer a flyer GMT at this price. Some also find the crown position at 4 o'clock undesirable, and a few note a lack of dial contrast or illegibility of the inner bezel.

Zelos Nova 37

Owners widely praise the Zelos Nova 37's spectacular 37mm dimensions and extremely light, thin wearability. The meteorite dial is frequently highlighted as a captivating feature, though some reviewers suggest simpler indices would improve legibility over the Arabic numerals. The watch is considered a considerable value at $1,999. On balance, owners and reviewers rate the Zelos Nova 37 highly for its excellent dimensions and dial execution at the price.

From video reviewers

The wafer-thin case and intricate dial textures are standout features. The quality of the stock leather strap is a shared concern. Reviewers differed on whether the 37mm or 38mm case size was more accurate.

At a glance

15 of 29 specs differ
Diameter
Prospex Sea 1968 Heritage Diver's GMT42mm
Nova 3737mm
Power Reserve
Prospex Sea 1968 Heritage Diver's GMT72h
Nova 37
Water Resistance
Prospex Sea 1968 Heritage Diver's GMT200m
Nova 3750m
MSRP
Prospex Sea 1968 Heritage Diver's GMT$1,500
Nova 37$899

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
42mm
37mm
Thickness
12.9mm
7mm
Lug-to-Lug
48.6mm
37mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
50m

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Anti-reflective coating on inner surface
Dial Color
Salmon
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

4 specs
Caliber
Seiko 6R54
ETA/Peseux 7001
Type
Automatic
Manual
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,500
$899
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