Side by side

Sugess Seestern S456 GMTvsLongines HYDROCONQUEST GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Seestern S456 GMT
SugessSeestern S456 GMT
MSRP $299
HYDROCONQUEST GMT
LonginesHYDROCONQUEST GMT
MSRP $3,350

At a glance

11 of 29 specs differ
Diameter
Seestern S456 GMT40mm
HYDROCONQUEST GMT41mm
Power Reserve
Seestern S456 GMT40h
HYDROCONQUEST GMT40h
Water Resistance
Seestern S456 GMT200m
HYDROCONQUEST GMT300m
MSRP
Seestern S456 GMT$299
HYDROCONQUEST GMT$3,350

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
40mm
41mm
Thickness
13mm
12.9mm
Lug-to-Lug
48.8mm
49.4mm
Lug Width
20mm
21mm
Water Resistance
200m
300m

Crystal & Dial

2 specs
Dial Color
Blue
Green
Lume
Tritium
None

Movement

2 specs
Caliber
NH34
L844.5
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$3,350

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What people say

Owners + reviewers, side by side

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

Sugess Seestern S456 GMT

Owners widely praise the Sugess Seestern S456 GMT for its excellent case finishing, deep blue sunburst dial, and crisp indices, with one owner rating the overall fit and finish 9.5 out of 10. The watch is noted for its legibility, strong lume that lasts about 4 hours, and accurate timekeeping around -4 seconds per day, with easy GMT hand adjustment. Some owners report issues with a loose or friction-based unidirectional bezel, while others find theirs tight and prefer a bidirectional GMT bezel. The sapphire crystal is described as clear and flat by some, but others find it very reflective with AR coating that could be improved. Sizing is generally considered good at 39mm with a 46mm lug-to-lug and 12mm thickness, though one owner expresses concern about its 49mm lug-to-lug and 41mm bezel diameter. Overall, owners rate the Sugess Seestern S456 GMT highly for its impressive finishing and dial at its price point.

Longines HYDROCONQUEST GMT

Owners widely praise the Longines HYDROCONQUEST GMT for its excellent finishing, smooth winding action, and overall value, with some finding its build quality and colorways superior to higher-priced competitors. Reviewers and owners alike note its robustness as a traveler's dive watch with a true GMT movement. Some owners find the round markers at 6 and 9 disrupt dial symmetry, and the GMT hour markers are described as tiny and difficult to read. The date wheel can be mismatched on certain dial colors, and the bracelet clasp is noted as sharp by one reviewer. While some owners wish for a smaller case size, others find the 41mm comfortable. The bezel action is flagged as having bounce-back by one owner, though the brushed finish effectively hides wear. Overall, owners and reviewers rate the Longines HYDROCONQUEST GMT highly for its robust build and excellent value proposition.

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