Side by side

Dryden Heartlander AutomaticvsSeiko Prospex Sea 1968 Heritage Diver's GMT

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.

Dryden Heartlander Automatic

The Dryden Heartlander Automatic is widely praised for its versatility, comfortable 38mm case that wears smaller than its dimensions suggest, and excellent dial variety. Reviewers highlight its value at $500, noting good finishing, a domed sapphire crystal, and 100m water resistance. The tapering bracelet with solid links is also considered comfortable. One owner notes the crown may protrude slightly and irritate some wearers. On balance, owners and reviewers rate the Dryden Heartlander Automatic highly for its combination of wearability, features, and value.

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.

At a glance

13 of 29 specs differ
Diameter
Heartlander Automatic38mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
Heartlander Automatic
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
Heartlander Automatic101m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
Heartlander Automatic$600
Prospex Sea 1968 Heritage Diver's GMT$1,500

Full specifications

Case

5 specs
Category
Field
Diver
Diameter
38mm
42mm
Thickness
11.2mm
12.9mm
Lug-to-Lug
46mm
48.6mm
Water Resistance
101m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Miyota 9039
Seiko 6R54
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$600
$1,500
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