Side by side
Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsNoctua Watch Corp. Sentinel
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
OSAR-D (Original SAR with Date) Automatic 41mm41mm
Sentinel42mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 41mm40h
Sentinel—
Water Resistance
OSAR-D (Original SAR with Date) Automatic 41mm300m
Sentinel300m
MSRP
OSAR-D (Original SAR with Date) Automatic 41mm$1,800
Sentinel$429
Full specifications
Case
6 specsCategory
Diver
—
Diameter
41mm
42mm
Thickness
13mm
15mm
Lug-to-Lug
43.5mm
46mm
Lug Width
18mm
22mm
Material
316L Stainless Steel
Stainless Steel
Crystal & Dial
1 specsDial Color
Black
—
Movement
2 specsCaliber
Sellita SW220-1
Seiko NH35A
Power Reserve
40h
—
Pricing
1 specsMSRP
$1,800
—
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