Side by side

Bremont ionBirdvsSugess Seestern Heritage S436-2 BB GMT

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

ionBird
BremontionBird
MSRP $5,800
Seestern Heritage S436-2 BB GMT
SugessSeestern Heritage S436-2 BB GMT
MSRP $299

At a glance

14 of 29 specs differ
Diameter
ionBird43mm
Seestern Heritage S436-2 BB GMT40mm
Power Reserve
ionBird40h
Seestern Heritage S436-2 BB GMT35h
Water Resistance
ionBird
Seestern Heritage S436-2 BB GMT10m
MSRP
ionBird$5,800
Seestern Heritage S436-2 BB GMT$299

Full specifications

Case

7 specs
Category
Pilot
GMT
Diameter
43mm
40mm
Thickness
12.2mm
Lug-to-Lug
48mm
Lug Width
20mm
Material
Titanium
Stainless Steel
Water Resistance
10m

Crystal & Dial

2 specs
Dial Color
Regular length (15cm - 19cm wrist size)
Black
Lume
None
Tritium

Movement

4 specs
Caliber
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
35h
Complications
None
GMT, Moonphase, Date

Pricing

1 specs
MSRP
$5,800
$299

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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.

Sugess Seestern Heritage S436-2 BB GMT

Owners widely praise the Sugess Seestern Heritage S436-2 BB GMT for its 39mm sizing, 12mm thinness, and light yet solid feel, with many appreciating its legibility due to the matte dial, clear crystal, and strong lume, though one owner flags the lume as a weak point. The case finishing is considered excellent, and the blue dial and satin finish are favorably compared to alternatives. Some owners report issues with a loose bezel, with others finding it improved after tuning, and one owner notes the seconds hand is too short. The bracelet clasp lacks sufficient micro-adjustment and screw pins are difficult to remove. On balance, owners rate the Sugess Seestern Heritage S436-2 BB GMT highly for its comfortable wearability and attractive finishing at the price.

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