Seiko 62MASvsSpinnaker Spence 300

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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.

Seiko 62MAS at true scale

62MAS

Spinnaker Spence 300 at true scale

Spence 300

Diameter

40.5mm

40mm

Lug-to-Lug

47.6mm

lowest

48mm

Thickness

13.2mm

11.5mm

lowest

Water Resistance

200m

300m

highest

Power Reserve

70h

n/a

MSRP

$1,200

$650

lowest

Movement

Seiko 6R35

Seiko NH35

Case

5 specs
Diameter
40.5mm
40mm
Thickness
13.2mm
11.5mm
Lug-to-Lug
47.6mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6R35
Seiko NH35
Power Reserve
70h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,200
$650
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Reviews

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

Seiko 62MAS

Owners widely praise the Seiko 62MAS for its beautiful vintage-inspired finishing, crisp bezel action, and overall build quality, with many appreciating its comfortable 40.5mm case and slim apparent height. Some owners report accuracy issues with the 6R movement, while others find it runs within specifications, and opinions are split on whether the 40mm size is too large for smaller wrists, with some noting it can wear top-heavy. The price point is considered high by some, though others deem it fair for a new watch. Overall, owners and reviewers rate the Seiko 62MAS highly for its faithful recreation of the original design and refined modern interpretation.

From video reviewers

The 37.5mm-38mm case size is a significant strength, offering a historically accurate and comfortable fit. Reviewers did not agree on any specific weaknesses.

Spinnaker Spence 300

Owners widely praise the Spinnaker Spence 300 for its slim 10.9mm case and 40mm diameter, offering a comfortable and versatile wear. Reviewers and owners alike highlight its value, with some seeing it as a budget alternative to more expensive dive watches. The watch features a Seiko NH35 automatic movement and 300m water resistance. However, some community members find the dial printing and bracelet finishing to be less refined, and a few suggest other brands offer better value at similar price points. On balance, owners and reviewers rate the Spinnaker Spence 300 highly for its impressive case dimensions and overall value proposition.

From video reviewers

The watch's thin 10.9mm profile for a 300m diver is a key strength. No shared weakness was identified.