Aigi Watches NORTHERN LIGHTS AUTOMATICvsSeiko Prospex Sea

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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 at true scale

Prospex Sea

Diameter

43mm

43.8mm

Lug-to-Lug

49mm

48.7mm

lowest

Thickness

11mm

lowest

12.8mm

Water Resistance

200m

200m

Power Reserve

n/a

41h

MSRP

$443

lowest

$625

Movement

Seiko NH35

Seiko 4R35

Case

3 specs
Diameter
43mm
43.8mm
Thickness
11mm
12.8mm
Lug-to-Lug
49mm
48.7mm

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 4R35
Power Reserve
0h
41h
Jewels
0
23

Pricing

1 specs
MSRP
$443
$625
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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

The Seiko Prospex Sea is widely praised for its excellent value as a sport watch, with owners highlighting its comfortable wearability and generous lume. Reviewers note its solid build quality and attractive design, with some specifically mentioning the matte black dial as a strong point. One owner reports accuracy around +1 to +2 seconds per day. The 43.8mm case size is considered substantial by some, and one owner found the watch heavy and thick, regretting not choosing a different variant. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its blend of classic design and modern utility at an accessible price point.

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