Side by side

Seiko Prospex Sea 1968 Heritage Diver's GMTvsZelos Hammerhead 43 Field

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

Prospex Sea 1968 Heritage Diver's GMT
SeikoProspex Sea 1968 Heritage Diver's GMT
MSRP $1,500
Hammerhead 43 Field
ZelosHammerhead 43 Field
MSRP $399

At a glance

15 of 29 specs differ
Diameter
Prospex Sea 1968 Heritage Diver's GMT42mm
Hammerhead 43 Field43mm
Power Reserve
Prospex Sea 1968 Heritage Diver's GMT72h
Hammerhead 43 Field40h
Water Resistance
Prospex Sea 1968 Heritage Diver's GMT200m
Hammerhead 43 Field300m
MSRP
Prospex Sea 1968 Heritage Diver's GMT$1,500
Hammerhead 43 Field$399

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
42mm
43mm
Thickness
12.9mm
13mm
Lug-to-Lug
48.6mm
43mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
6R54
Seiko NH38
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,500
$399

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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 Hammerhead 43 Field

The Zelos Hammerhead 43 Field is praised for its unique bronze case patina potential, masculine angular design, and fantastic lume. Owners also highlight the lovely Mosaic Ember and purple agate dials. However, some owners feel the 43mm case wears large, suited for wrists 7.5 inches and up, and a reviewer notes its substantial 17mm thickness. The rubber strap is disliked for making the watch feel top-heavy, and the date window is considered tiny and hard to see. Some owners express disappointment with the NH movement. Overall, owners and reviewers rate the Zelos Hammerhead 43 Field well for its distinctive design and dial appeal at its price point.

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