Astor + Banks Sea Ranger M2vsSeiko 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.

Astor + Banks Sea Ranger M2 at true scale

Sea Ranger M2

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

Prospex Sea 1968 Heritage Diver's GMT

Diameter

40mm

42mm

Lug-to-Lug

45.5mm

lowest

48.6mm

Thickness

12.5mm

lowest

12.9mm

Water Resistance

300m

highest

200m

Power Reserve

n/a

72h

MSRP

$1,299

lowest

$1,500

Movement

La Joux-Perret G100

Seiko 6R54

Case

5 specs
Diameter
40mm
42mm
Thickness
12.5mm
12.9mm
Lug-to-Lug
45.5mm
48.6mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
La Joux-Perret G100
Seiko 6R54
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,299
$1,500
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Reviews

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

Astor + Banks Sea Ranger M2

The Astor + Banks Sea Ranger M2 is noted for its functional and balanced design, excellent legibility, and a 12-hour lumed sapphire bezel. Reviewers highlight its good lume, though one source describes it as good but not great. The watch features a 40mm case and 300m water resistance. One review states it uses a La Joux-Perret G100 movement regulated to ±8 seconds per day, while another mentions a Sellita SW200 automatic movement adjusted by the brand. The pre-order price is $650, with a standard price of $850. On balance, reviewers find the Astor + Banks Sea Ranger M2 to be a compelling GADA watch, with its design and legibility being key strengths.

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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