BERNY Compressor-style Diver V4 AM439MvsSeiko Prospex Sea 1968 Heritage Diver's GMT 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.

BERNY Compressor-style Diver V4 AM439M at true scale

Compressor-style Diver V4 AM439M

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

Prospex Sea 1968 Heritage Diver's GMT Limited Edition

Diameter

42mm

42mm

Lug-to-Lug

48mm

lowest

48.6mm

Thickness

13.5mm

13.3mm

lowest

Water Resistance

200m

300m

highest

Power Reserve

n/a

72h

MSRP

$143

lowest

$1,750

Movement

Miyota 8215

Seiko 6R54

Case

5 specs
Thickness
13.5mm
13.3mm
Lug-to-Lug
48mm
48.6mm
Lug Width
22mm
20mm
Water Resistance
200m
300m
Caseback
Exhibition
n/a

Crystal & Dial

3 specs
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
Miyota 8215
Seiko 6R54
Power Reserve
n/a
72h
Jewels
0
24

Pricing

1 specs
MSRP
$143
$1,750
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Reviews

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

BERNY Compressor-style Diver V4 AM439M

Owners widely praise the BERNY BERNY-Men Automatic Compressor-style Diver Watch V4-AM439M for its exceptional value, with one owner calling it a "no-brainer" at $70 and another highlighting its $85-$100 price range as a good opportunity for Chinese sellers. The watch is noted for its appealing compressor style, sapphire crystal with excellent AR coating, and good lume. The Miyota 8215 automatic movement, 200m water resistance, and 42mm case are confirmed specifications. One owner reports the second crown operates the inner bezel. Overall, owners rate the BERNY BERNY-Men Automatic Compressor-style Diver Watch V4-AM439M highly for its impressive value and solid build quality at the price point.

Seiko Prospex Sea 1968 Heritage Diver's GMT Limited Edition

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition is widely praised for its excellent quality and finishing for its price, with reviewers highlighting its beautiful case, bracelet, and Lumibrite lume. Owners appreciate the comfortable 42mm case size and the 4 o'clock crown position. The watch features a sapphire crystal and uses the in-house 6R54 automatic movement with a three-day power reserve. Some reviewers note that the GMT function is secondary and that the bezel clicks are quieter than expected. The 4:30 date window splits opinion among enthusiasts, and it is described as a "caller GMT" rather than a true "traveller GMT." Overall, owners and reviewers rate the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition highly for its excellent value, quality finishing, and comfortable wearability.

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