Side by side

Grand Seiko SBGA375vsLongines HYDROCONQUEST GMT

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

SBGA375
Grand SeikoSBGA375
MSRP $5,600
HYDROCONQUEST GMT
LonginesHYDROCONQUEST GMT
MSRP $3,350

At a glance

12 of 29 specs differ
Diameter
SBGA37540mm
HYDROCONQUEST GMT41mm
Power Reserve
SBGA37572h
HYDROCONQUEST GMT40h
Water Resistance
SBGA375100m
HYDROCONQUEST GMT300m
MSRP
SBGA375$5,600
HYDROCONQUEST GMT$3,350

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
40mm
41mm
Thickness
12.5mm
12.9mm
Lug-to-Lug
46.2mm
49.4mm
Lug Width
19mm
21mm
Water Resistance
100m
300m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Green

Movement

3 specs
Caliber
9R65
L844.5
Type
Spring Drive
Automatic
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$5,600
$3,350

Follow this matchup

Get a note when Grand Seiko SBGA375 vs Longines HYDROCONQUEST GMT gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Grand Seiko SBGA375

Grand Seiko SBGA375 owners praise its classic, subtle design and the engineering of its Spring Drive movement, with one noting it "does not fail to deliver what they are known for." The dial offers good legibility, with polished side bevels on the hour markers catching light well. However, one owner scuffed the bezel within a week, and another questioned if a lug was missing. Overall, owners rate the Grand Seiko SBGA375 highly for its refined design and movement engineering, signaling discerning taste.

From video reviewers

The Spring Drive movement's smooth sweep is a key strength. The bracelet's taper and clasp were cited as areas for improvement.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.