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.

Glycine Sea Kraken at true scale

Sea Kraken

Sheffield 1A at true scale

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 specs
Diameter
39mm
40mm
Thickness
12.7mm
12.8mm
Lug-to-Lug
n/a
46mm
Lug Width
22mm
20mm
Finish
n/a
n/a
Water Resistance
150m
200m
Caseback
n/a
n/a

Crystal & Dial

5 specs
Crystal Shape
n/a
n/a
AR Coating
n/a
n/a
Dial Color
White
White/Blue
Indices
n/a
n/a
Lume
Luminous
Swiss blue lume

Movement

5 specs
Caliber
Sellita SW200-1
Seiko NH35
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
n/a
Jewels
26
0
Complications
Date
None

Pricing

1 specs
MSRP
$715
$238
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Reviews

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

Glycine Sea Kraken

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.

From video reviewers

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

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.