Aigi Watches NORTHERN LIGHTS AUTOMATICvsSeiko Prospex Sea 1968 Heritage Diver's GMT

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Aigi Watches NORTHERN LIGHTS AUTOMATIC at true scale

NORTHERN LIGHTS AUTOMATIC

Seiko Prospex Sea 1968 Heritage Diver's GMT at true scale

Prospex Sea 1968 Heritage Diver's GMT

Diameter

43mm

42mm

Lug-to-Lug

49mm

48.6mm

lowest

Thickness

11mm

lowest

12.9mm

Water Resistance

200m

200m

Power Reserve

n/a

72h

MSRP

$443

lowest

$1,500

Movement

Seiko NH35

Seiko 6R54

Case

4 specs
Diameter
43mm
42mm
Thickness
11mm
12.9mm
Lug-to-Lug
49mm
48.6mm
Lug Width
22mm
20mm

Crystal & Dial

3 specs
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
n/a
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH35
Seiko 6R54
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$443
$1,500
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Aigi Watches NORTHERN LIGHTS AUTOMATIC

Owners praise the Northern Lights dial for its character in sunlight, comparing it favorably to Grand Seiko's dials. Some owners question the brand's longevity and suggest more reputable alternatives for a safer purchase. Concerns are raised about the watch's chunkiness, with a 43mm diameter and 49mm lug-to-lug. One owner noted the watch arrived with a Miyota 9015 movement, not the expected Seiko NH35. Overall, owners find the Aigi Watches NORTHERN LIGHTS AUTOMATIC to be a decent value at $199, with the dial being a standout feature.

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 value, with owners noting its comfortable wearability and attractive aesthetic, particularly the silver/white sunray dial and blue ceramic bezel. The improved bracelet clasp with excellent micro-adjustment is a recurring positive point. Some owners report accuracy figures of +3 seconds per day or +/- 5 seconds per day, exceeding the movement's stated range. However, the GMT functionality is considered secondary to its dive watch capabilities by some, with the GMT scale being difficult to read and the caller-style GMT movement being a drawback for certain users. The dial contrast is also noted as lacking by some, and the crown at 4 o'clock is undesirable for a few. On balance, owners and reviewers rate the Seiko Prospex Sea 1968 Heritage Diver's GMT highly for its blend of dive watch character and GMT functionality, offering significant features for its price.

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