Alsta NautoscaphvsLongines HydroConquest GMT

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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.

Alsta Nautoscaph at true scale

Nautoscaph

Longines HydroConquest GMT at true scale

HydroConquest GMT

Diameter

40mm

41mm

Lug-to-Lug

51.3mm

49.4mm

lowest

Thickness

16.2mm

12.9mm

lowest

Water Resistance

300m

300m

Power Reserve

41h

n/a

MSRP

$595

lowest

$3,350

Movement

Seiko NH35

L844.5

Case

4 specs
Diameter
40mm
41mm
Thickness
16.2mm
12.9mm
Lug-to-Lug
51.3mm
49.4mm
Lug Width
20mm
21mm

Crystal & Dial

1 specs
Dial Color
n/a
Green

Movement

2 specs
Caliber
Seiko NH35
L844.5
Power Reserve
41h
0h

Pricing

1 specs
MSRP
$595
$3,350
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Reviews

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

Alsta Nautoscaph

Owners widely report the Alsta NAUTOSCAPH wears comfortably on the wrist, though some find it dense and top-heavy. Reviewers praise its dial design and colorway, with one enthusiastically recommending it for Jaws fans and noting the attractive contrasting polished and brushed finishes. A minor drawback mentioned is the lack of lume at the 3 o'clock position. Community members and reviewers alike consider the €900 price point for the Seiko NH35 movement excessive. Overall, owners and reviewers rate the Alsta NAUTOSCAPH highly for its Jaws-inspired aesthetic and attractive dial, despite concerns about its thickness and value proposition.

Longines HydroConquest GMT

Owners widely praise the Longines HYDROCONQUEST GMT for its excellent finishing, robust build quality, and comfortable wearability, with some finding its finish superior to higher-priced competitors. The smooth winding action and value proposition are also frequently highlighted. Some owners note that the GMT hour markers are difficult to read, and the date wheel does not always match the dial color. A few reviewers mention a sharp folding clasp and a bezel with bounce-back, while others prefer a smaller case size. Overall, owners and reviewers rate the Longines HYDROCONQUEST GMT highly for its impressive build quality and value as a travel-oriented dive watch.

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