Side by side

Bremont ionBirdvsLongines HYDROCONQUEST GMT

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

ionBird
BremontionBird
MSRP $5,800
HYDROCONQUEST GMT
LonginesHYDROCONQUEST GMT
MSRP $3,350

At a glance

10 of 29 specs differ
Diameter
ionBird43mm
HYDROCONQUEST GMT41mm
Power Reserve
ionBird40h
HYDROCONQUEST GMT40h
Water Resistance
ionBird
HYDROCONQUEST GMT300m
MSRP
ionBird$5,800
HYDROCONQUEST GMT$3,350

Full specifications

Case

7 specs
Category
Pilot
Diver
Diameter
43mm
41mm
Thickness
12.9mm
Lug-to-Lug
49.4mm
Lug Width
21mm
Material
Titanium
Stainless Steel
Water Resistance
300m

Crystal & Dial

1 specs
Dial Color
Regular length (15cm - 19cm wrist size)
Green

Movement

1 specs
Caliber
L844.5

Pricing

1 specs
MSRP
$5,800
$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.

Bremont ionBird

Owners report the Bremont ionBird is overpriced and features a printed dial with a poorly placed date window at 4:30, which some find visually disruptive. However, some owners suggest its case finishing is superior to competitors. The 43mm titanium Bremont ionBird GMT is powered by a COSC-certified BE-93-2AV automatic movement and retails for $5,795. On balance, owners and reviewers find the Bremont ionBird's date window placement and price point to be significant drawbacks.

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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