Aerotec Watches Aerotec Ace X GMT DivervsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch

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Aerotec Watches Aerotec Ace X GMT Diver

MSRP $459

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Seiko Prospex Sea 1968 Heritage Diver's GMT Watch

MSRP $1,700

See the full watch

Buy from Seiko Used on eBay

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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.

Aerotec Ace X GMT Diver

Prospex Sea 1968 Heritage Diver's GMT Watch

Diameter

Across the case, crown excluded.

41.5mm

42mm

Lug-to-Lug

The number that decides fit.

n/a

48.6mm

Thickness

How it sits under a cuff.

n/a

13.3mm

Water Resistance

Rated in meters.

200m

300m

highest

Power Reserve

How long it runs off the wrist.

n/a

72h

MSRP

Sticker price, new.

$459

lowest

$1,700

Movement

What drives the hands.

Seiko NH34

Seiko 6R54

Spec

Aerotec Ace X GMT Diver

Prospex Sea 1968 Heritage Diver's GMT Watch

Case

6 specs

Diameter

41.5mm

42mm

Thickness

n/a

13.3mm

Lug-to-Lug

n/a

48.6mm

Lug Width

n/a

20mm

Material

n/a

Stainless Steel

Water Resistance

200m

300m

Crystal & Dial

4 specs

Crystal

n/a

Sapphire

AR Coating

n/a

Anti-reflective coating on inner surface

Dial Color

Silver

n/a

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Seiko NH34

Seiko 6R54

Power Reserve

72h

Jewels

Pricing

1 specs

MSRP

$459

$1,700

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Reviews

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

Aerotec Watches Aerotec Ace X GMT Diver

The Aerotec Ace X GMT Diver is praised for its excellent timekeeping from the Seiko NH34 movement, with one owner reporting immaculate condition after minimal wear. The watch features a 41.5mm case and 200m water resistance. Overall, owners rate the Aerotec Ace X GMT Diver highly for its reliable Seiko NH34 movement and solid build quality.

WatchUSeek

Monochrome

Seiko Prospex Sea 1968 Heritage Diver's GMT Watch

Owners and reviewers widely praise the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch for its excellent value, Marinemaster-style build, and comfortable 42mm steel case with a 4:00 crown position. The watch features a refined clasp with an impressive 15mm of micro-adjustment and a caller-style GMT complication. While the 6R54 movement's stated accuracy is +25 to -15 seconds per day, real-world performance is often found to be better. The watch is priced at $1,700 USD. Overall, owners and reviewers rate the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch highly for its attractive design and robust build quality at its price point.