Side by side

Marathon Arctic OSAR 41mm AutomaticvsLongines PRIMALUNA

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

Arctic OSAR 41mm Automatic
MarathonArctic OSAR 41mm Automatic
MSRP $1,800
PRIMALUNA
LonginesPRIMALUNA
MSRP $1,700

At a glance

22 of 29 specs differ
Diameter
Arctic OSAR 41mm Automatic41mm
PRIMALUNA30mm
Power Reserve
Arctic OSAR 41mm Automatic40h
PRIMALUNA40h
Water Resistance
Arctic OSAR 41mm Automatic300m
PRIMALUNA30m
MSRP
Arctic OSAR 41mm Automatic$1,800
PRIMALUNA$1,700

Full specifications

Case

9 specs
Category
Diver
Dress
Diameter
41mm
30mm
Thickness
13mm
8mm
Lug-to-Lug
43.5mm
37mm
Lug Width
18mm
7mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Water Resistance
300m
30m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Underside
Dial Color
White
Mother of Pearl
Indices
Applied
Diamond indexes
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Sellita SW220-1
L152.3
Type
Automatic
Quartz
Beat Rate
28,800 vph
25,200 vph
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$1,800
$1,700

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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 41mm Automatic

The Marathon Arctic OSAR 41mm Automatic is noted for its comfortable wearability on wrists under 7 inches, with one owner finding the 41mm size perfect. Accuracy observations vary, with one owner reporting a consistent +1 second per day and another noting -20 seconds per day. The watch features a Sellita automatic movement and has dimensions of 14mm thickness and a 48mm lug-to-lug. Overall, owners appreciate the Marathon Arctic OSAR 41mm Automatic for its comfortable fit and Marathon's overall appeal.

Longines PRIMALUNA

Owners widely praise the Longines PRIMALUNA for its attractive style and understated 26.5mm size, with the automatic version favored for its smooth sweep. The redesigned 34mm model features a fluid, polished case, available in steel or bi-metal, with dial options including mother-of-pearl. The automatic movement, Caliber L899, demonstrates consistent accuracy averaging a loss of 1.3 seconds per day across six positions and 3-4 seconds per day on the wrist, performing within COSC standards. The automatic movement offers a 72-hour power reserve. On balance, owners and reviewers highly regard the Longines PRIMALUNA for its blend of classic aesthetics and contemporary design updates, particularly appreciating the automatic movement's performance and the watch's overall stylish appeal.

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