Side by side

Spinnaker Spence 300vsLongines HYDROCONQUEST GMT

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

Spence 300
SpinnakerSpence 300
MSRP $650
HYDROCONQUEST GMT
LonginesHYDROCONQUEST GMT
MSRP $3,350

At a glance

8 of 29 specs differ
Diameter
Spence 30040mm
HYDROCONQUEST GMT41mm
Power Reserve
Spence 30040h
HYDROCONQUEST GMT40h
Water Resistance
Spence 300300m
HYDROCONQUEST GMT300m
MSRP
Spence 300$650
HYDROCONQUEST GMT$3,350

Full specifications

Case

5 specs
Diameter
40mm
41mm
Thickness
11.5mm
12.9mm
Lug-to-Lug
48mm
49.4mm
Lug Width
20mm
21mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

1 specs
Dial Color
Aquamarine
Green

Movement

1 specs
Caliber
SII NH35A
L844.5

Pricing

1 specs
MSRP
$650
$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.

Spinnaker Spence 300

The Spinnaker Spence 300 is widely praised for its slim 10.9mm case and 40mm diameter, offering a comfortable and uncommon thin diver design at its price point. Reviewers and owners highlight its value, especially below $350, and its blend of retro design with modern specifications, including a 300m depth rating and a fully indexed bezel. Some owners, however, find the dial printing and bracelet finishing to be less refined, with one noting the bracelet's male end links as a drawback. The consensus is that the Spinnaker Spence 300 is highly regarded for its exceptional value and wearable dimensions, making it a strong contender for an everyday sports watch.

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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