Side by side

Marathon Arctic OSAR 36mm AutomaticvsHamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

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

Arctic OSAR 36mm Automatic
MarathonArctic OSAR 36mm Automatic
MSRP $1,200

At a glance

12 of 29 specs differ
Diameter
Arctic OSAR 36mm Automatic36mm
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Power Reserve
Arctic OSAR 36mm Automatic40h
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Water Resistance
Arctic OSAR 36mm Automatic300m
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
MSRP
Arctic OSAR 36mm Automatic$1,200
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445

Full specifications

Case

7 specs
Category
Diver
Pilot
Diameter
36mm
40mm
Thickness
13mm
14.35mm
Lug-to-Lug
43.5mm
46mm
Lug Width
18mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
White
Blue

Movement

3 specs
Caliber
Sellita SW220-1
H-51-Si
Type
Automatic
Manual
Power Reserve
40h
60h

Pricing

1 specs
MSRP
$1,200
$2,445

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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.

Marathon Arctic OSAR 36mm Automatic

The Marathon Arctic OSAR 36mm Automatic is noted for its non-tritium dial option, though some owners prefer the 1-12 numeral layout found on other models. One owner found the 36mm size too small for their wrist. Overall, owners appreciate the Marathon Arctic OSAR 36mm Automatic for its non-tritium dial option.

Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

Owners and reviewers widely praise the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono for its authentic military design, attractive dial execution, and intriguing asymmetrical case, with many appreciating its utilitarian feel and vintage vibe. The hand-wound H-51-Si movement, offering a 60-hour power reserve and accuracy around +5 to +7 seconds per day, is also noted positively, as is the satisfying feel of manual winding. Some owners find the 36mm case size light and versatile, while others note it wears larger than its dimensions suggest. However, several sources point to the mineral crystal as a drawback compared to sapphire, and the lume is generally described as weak. The included strap is frequently criticized for being too long and uncomfortable, with many preferring it on a NATO strap. On balance, owners and reviewers rate the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono highly for its compelling vintage military aesthetic and solid value proposition.

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