Glycine Sea KrakenvsSheffield 1A
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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.

Sea Kraken

1A
Diameter
39mm
40mm
Lug-to-Lug
n/a
46mm
Thickness
12.7mm
lowest
12.8mm
Water Resistance
150m
200m
highest
Power Reserve
38h
n/a
MSRP
$715
$238
lowest
Movement
Sellita SW200-1
Seiko NH35
Case
7 specsCrystal & Dial
5 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Glycine Sea Kraken is widely praised for its retro design and excellent finishing for its price point. Owners highlight its crisp dial printing, elegant stainless steel bezel, and the smooth winding feel of its Sellita SW200-1 movement, with accuracy reported between +1/+2 and +6 seconds per day, though one owner noted it could lose up to 6 seconds when very active. The 39mm case size is generally considered comfortable, though some find its 48mm lug-to-lug measurement wears larger than expected. The included leather strap is frequently criticized as being of poor quality and unsuitable for a dive watch, prompting many owners to replace it. The Glycine Sea Kraken is considered an underrated watch offering great value, especially given its limited production and superior finishing compared to other Glycine models.
The Glycine Sea Kraken's value at its price point is a significant strength. Reviewers did not reach a consensus on any weaknesses.
Sheffield 1A owners praise its superb quality, sturdiness, and value, noting it feels more substantial than a Seiko 5. The blue dial is highlighted as a positive feature. One owner flagged expensive shipping fees as a drawback, and another suggested the bezel action could be crisper. Overall, owners consider the Sheffield 1A a no-brainer for its affordability and quality.
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