Cronos NH34 GMT Automatic Men Watch L6020MvsSeiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

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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.

Cronos NH34 GMT Automatic Men Watch L6020M at true scale

NH34 GMT Automatic Men Watch L6020M

Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition at true scale

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

Diameter

40.5mm

40mm

Lug-to-Lug

n/a

46.4mm

Thickness

12.8mm

lowest

13mm

Water Resistance

200m

300m

highest

Power Reserve

n/a

72h

MSRP

$269

lowest

$1,400

Movement

Seiko NH34

Seiko 6R55

Case

4 specs
Diameter
40.5mm
40mm
Thickness
12.8mm
13mm
Lug-to-Lug
n/a
46.4mm
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
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 NH34
Seiko 6R55
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$269
$1,400
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Reviews

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

Cronos NH34 GMT Automatic Men Watch L6020M

Owners widely praise the Cronos NH34 GMT Automatic Men Watch L6020M for its smooth crown action and perfectly aligned GMT hand, a common point of comparison to other NH34 watches. The watch is available in various colorways and dial options, including a striking white dial, and is noted as a definitive GMT homage with dimensions close to original designs. The bracelet features an Easylink Comfort Extension Link in addition to standard micro-adjustments. One owner flags the deep rehaut as a weak point, though it is not noticeable in daily wear and accommodates the NH34 movement's hands. Overall, owners rate the Cronos NH34 GMT Automatic Men Watch L6020M highly for its excellent GMT hand alignment and smooth crown action at the price point.

Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

The Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition is praised for its comfortable MarineMaster case design and attractive wave-patterned silvery-white dial with a grey bezel insert. Owners note the 40mm case and 300m water resistance. Some owners criticize the 6R55 movement's accuracy, reporting deviations of +25/-15 seconds per day, and find the watch expensive for a limited edition with a large production run. Overall, owners find the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition a comfortable and attractive watch, though some question its value proposition due to accuracy concerns and its "limited" status.