Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsSeestern Sub 300 V4

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
Sub 300 V4
SeesternSub 300 V4
MSRP $10

At a glance

17 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Sub 300 V442mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Sub 300 V441h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Sub 300 V4200m
MSRP
Flyboy Airmaster GMT Automatic$365
Sub 300 V4$10

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
40mm
42mm
Thickness
13mm
Lug-to-Lug
46mm
Lug Width
20mm
Finish
Brushed and polished
Brushed + Sandblasted
Water Resistance
50m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Black
Orange
Lume
None
Japan Lume (blue glow)

Movement

5 specs
Caliber
NH34
Seiko NH35A
Beat Rate
28,800 vph
21,600 vph
Power Reserve
40h
41h
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$365
$10

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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.

Seestern Sub 300 V4

Owners widely praise the Seestern Sub 300 V4 for its terrific fit and finish and surprising little touches at its $179 price, noting top-notch case, dial, bezel, and crystal. The bracelet is considered nice enough for the price point, and the watch is powered by the solid and reliable Seiko NH35 movement. Some owners report that the polished sides of the case show signs of wear. Overall, owners rate the Seestern Sub 300 V4 highly for its excellent case, dial, and bezel finishing at the price.

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