Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsSugess Seestern Heritage S436-2 BB GMT

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

Flyboy Airmaster GMT Automatic
AVI-8Flyboy Airmaster GMT Automatic
MSRP $365
Seestern Heritage S436-2 BB GMT
SugessSeestern Heritage S436-2 BB GMT
MSRP $299

At a glance

11 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Seestern Heritage S436-2 BB GMT40mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Seestern Heritage S436-2 BB GMT35h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Seestern Heritage S436-2 BB GMT10m
MSRP
Flyboy Airmaster GMT Automatic$365
Seestern Heritage S436-2 BB GMT$299

Full specifications

Case

5 specs
Thickness
12.2mm
Lug-to-Lug
48mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
10m

Crystal & Dial

1 specs
Lume
None
Tritium

Movement

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

Pricing

1 specs
MSRP
$365
$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.

AVI-8 Flyboy Airmaster GMT Automatic

Owners widely praise the AVI-8 Flyboy Airmaster GMT Automatic for its robust build quality, intricate three-timezone function, and crisp dial texture. The watch is noted for its wearable 41mm case size and 48.5mm lug-to-lug, with an internally positioned GMT complication that maintains a clean dial appearance. Some owners report the stock leather strap feels cheap and limits strap changing options. On balance, owners rate the AVI-8 Flyboy Airmaster GMT Automatic highly for its solid finishing and value, particularly highlighting the dial's depth and texture.

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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