Which is bigger, the Marathon Arctic OSAR 36mm Automatic or the Tornek-Rayville TR-660 Sapphire Non-date?

The Tornek-Rayville TR-660 Sapphire Non-date wears larger at 40mm versus 36mm for the Marathon Arctic OSAR 36mm Automatic — a 4mm difference across the dial.

Which has better water resistance, the Marathon Arctic OSAR 36mm Automatic or the Tornek-Rayville TR-660 Sapphire Non-date?

The Marathon Arctic OSAR 36mm Automatic is rated to 300m versus 200m for the Tornek-Rayville TR-660 Sapphire Non-date.

Which has a longer power reserve, the Marathon Arctic OSAR 36mm Automatic or the Tornek-Rayville TR-660 Sapphire Non-date?

The Tornek-Rayville TR-660 Sapphire Non-date carries a 50-hour power reserve against 40 hours on the Marathon Arctic OSAR 36mm Automatic.

What movement does the Marathon Arctic OSAR 36mm Automatic run compared to the Tornek-Rayville TR-660 Sapphire Non-date?

Both watches run automatic movements — the Marathon Arctic OSAR 36mm Automatic uses the Sellita SW220-1 and the Tornek-Rayville TR-660 Sapphire Non-date uses the TMI NH38.

Side by side

Marathon Arctic OSAR 36mm AutomaticvsTornek-Rayville TR-660 Sapphire Non-date

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

Marathon Arctic OSAR 36mm Automatic

36mm-arctic-original-sar-w-date-on-3-piece-rubber-strap-kit-osar-d

MSRP $1,200

Tornek-Rayville TR-660 Sapphire Non-date

tr-660-w-sapphire-inlay-1201-non-date-3167895

At a glance

12 of 29 specs differ

Diameter

Arctic OSAR 36mm Automatic36mm

TR-660 Sapphire Non-date40mm

Power Reserve

Arctic OSAR 36mm Automatic40h

TR-660 Sapphire Non-date50h

Water Resistance

Arctic OSAR 36mm Automatic300m

TR-660 Sapphire Non-date200m

MSRP

Arctic OSAR 36mm Automatic$1,200

TR-660 Sapphire Non-date—

Full specifications

Case

6 specs

Diameter

36mm

40mm

Thickness

13mm

14.7mm

Lug-to-Lug

43.5mm

48.5mm

Lug Width

18mm

20mm

Material

316L Stainless Steel

Stainless Steel

Water Resistance

300m

200m

Crystal & Dial

3 specs

AR Coating

Inner

Yes

Dial Color

White

Black

Lume

None

Superluminova

Movement

2 specs

Caliber

Sellita SW220-1

TMI NH38

Power Reserve

40h

50h

Pricing

1 specs

MSRP

$1,200

—

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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.

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Tornek-Rayville TR-660 Sapphire Non-date

Owners widely praise the Tornek-Rayville TR-660 for its quality, good timekeeping, and suitability as a military diver reissue. The 40mm bead-blasted 316L stainless steel case, sapphire bezel inlay, and Arclite Super LumiNova are noted features, powered by a Japanese TMI NH38 automatic movement and water-resistant to 20 ATMs. Some owners suggest alternatives due to availability issues with the small-batch releases. Overall, owners rate the Tornek-Rayville TR-660 highly for its faithful reissue design and quality build at its price point.

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