Which is cheaper, the Marathon Arctic OSAR 46mm Automatic or the Sinn EZM 3F?

At MSRP the Sinn EZM 3F is the cheaper of the two at $1,933, against $2,500 for the Marathon Arctic OSAR 46mm Automatic — a $567 gap before any retailer discounting.

Which is bigger, the Marathon Arctic OSAR 46mm Automatic or the Sinn EZM 3F?

The Marathon Arctic OSAR 46mm Automatic wears larger at 46mm versus 41mm for the Sinn EZM 3F — a 5mm difference across the dial.

Which has better water resistance, the Marathon Arctic OSAR 46mm Automatic or the Sinn EZM 3F?

The Marathon Arctic OSAR 46mm Automatic is rated to 300m versus 200m for the Sinn EZM 3F.

Which has a longer power reserve, the Marathon Arctic OSAR 46mm Automatic or the Sinn EZM 3F?

The Marathon Arctic OSAR 46mm Automatic carries a 40-hour power reserve against 38 hours on the Sinn EZM 3F.

What movement does the Marathon Arctic OSAR 46mm Automatic run compared to the Sinn EZM 3F?

Both watches run automatic movements — the Marathon Arctic OSAR 46mm Automatic uses the Sellita SW220-1 and the Sinn EZM 3F uses the SW200-1.

Side by side

Marathon Arctic OSAR 46mm AutomaticvsSinn EZM 3F

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

Marathon Arctic OSAR 46mm Automatic

46mm-arctic-original-sar-w-date-on-3-piece-rubber-strap-kit-osar-d

MSRP $2,500

Sinn EZM 3F

EZM 3F

MSRP $1,933

At a glance

19 of 29 specs differ

Diameter

Arctic OSAR 46mm Automatic46mm

EZM 3F41mm

Power Reserve

Arctic OSAR 46mm Automatic40h

EZM 3F38h

Water Resistance

Arctic OSAR 46mm Automatic300m

EZM 3F200m

MSRP

Arctic OSAR 46mm Automatic$2,500

EZM 3F$1,933

Full specifications

Case

9 specs

Crystal & Dial

5 specs

Crystal Shape

Flat

—

AR Coating

Inner

Underside

Dial Color

White

Black

Indices

Applied

—

Lume

None

Luminescent

Movement

4 specs

Caliber

Sellita SW220-1

SW200-1

Power Reserve

40h

38h

Jewels

Complications

None

Date, Pilot's Bezel

Pricing

1 specs

MSRP

$2,500

$1,933

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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 46mm Automatic

Owners widely praise the Marathon Arctic OSAR 46mm Automatic for its overbuilt toughness and industrial, instrument-like aesthetic, with some preferring the Arctic dial for legibility. One owner notes the automatic movement may be unnecessary for rough use compared to a quartz option. Reviewers mention the MaraGlo luminous paint and a Sellita SW200-1 automatic movement. Some owners question its rising price and luxury positioning, with one reporting poor lume and movement performance. Overall, owners value the Marathon Arctic OSAR 46mm Automatic for its robust build and utilitarian design.

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Sinn EZM 3F

Owners widely praise the Sinn EZM 3F for its excellent legibility, robust bead-blasted build, and practical left-hand crown, with some noting its compact, slim wearability and smart appearance on a bracelet. One owner flags minor finishing imperfections and an awkward date window placement, and expresses a desire for tegimented scratch resistance. Overall, owners rate the Sinn EZM 3F highly for its practical mission timer design and compact wearability.

From video reviewers

The Sinn EZM 3F's Ar-Dehumidifying Technology for fogging prevention and temperature resistance is a key strength. Reviewers noted the bracelet lacked on-the-fly micro-adjustment and diver's extensions.

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