Side by side

Hamilton Khaki Aviation Converter AutovsSugess Seestern S456 GMT

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

Khaki Aviation Converter Auto
HamiltonKhaki Aviation Converter Auto
MSRP $1,345
Seestern S456 GMT
SugessSeestern S456 GMT
MSRP $299

At a glance

11 of 29 specs differ
Diameter
Khaki Aviation Converter Auto42mm
Seestern S456 GMT40mm
Power Reserve
Khaki Aviation Converter Auto80h
Seestern S456 GMT40h
Water Resistance
Khaki Aviation Converter Auto100m
Seestern S456 GMT200m
MSRP
Khaki Aviation Converter Auto$1,345
Seestern S456 GMT$299

Full specifications

Case

5 specs
Category
Pilot
GMT
Diameter
42mm
40mm
Thickness
10.87mm
13mm
Lug-to-Lug
46mm
48.8mm
Water Resistance
100m
200m

Crystal & Dial

2 specs
Dial Color
Black
Blue
Lume
None
Tritium

Movement

3 specs
Caliber
H-10
NH34
Power Reserve
80h
40h
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$1,345
$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.

Hamilton Khaki Aviation Converter Auto

The Hamilton Khaki Aviation Converter Auto is recognized for its classic pilot's watch aesthetic, featuring a functional bi-directional slide rule bezel with a mineral glass insert for scratch protection. Reviewers highlight its instrument-heavy design, well-balanced dial, and robust 42mm or 44mm case with a satin-brushed finish and polished accents. The watch is equipped with applied indexes and hands filled with Super-LumiNova for legibility, and a flat sapphire crystal with double anti-reflective coating. The automatic models utilize the H-10 movement, offering a 60-hour power reserve, while the chronograph version uses the H-21-Si movement. Overall, reviewers praise the Hamilton Khaki Aviation Converter Auto for its attractive, functional pilot's watch design and robust build at its price point.

Sugess Seestern S456 GMT

Owners widely praise the Sugess Seestern S456 GMT for its excellent case finishing, deep blue sunburst dial, and crisp indices, with one owner rating the overall fit and finish 9.5 out of 10. The watch is noted for its legibility, strong lume that lasts about 4 hours, and accurate timekeeping around -4 seconds per day, with easy GMT hand adjustment. Some owners report issues with a loose or friction-based unidirectional bezel, while others find theirs tight and prefer a bidirectional GMT bezel. The sapphire crystal is described as clear and flat by some, but others find it very reflective with AR coating that could be improved. Sizing is generally considered good at 39mm with a 46mm lug-to-lug and 12mm thickness, though one owner expresses concern about its 49mm lug-to-lug and 41mm bezel diameter. Overall, owners rate the Sugess Seestern S456 GMT highly for its impressive finishing and dial at its price point.

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