Which is bigger, the Marathon Steel Navigator SSNAV Quartz or the Tornek-Rayville TR-660 Sapphire Non-date?

The Marathon Steel Navigator SSNAV Quartz wears larger at 41mm versus 40mm for the Tornek-Rayville TR-660 Sapphire Non-date — a 1mm difference across the dial.

Which has better water resistance, the Marathon Steel Navigator SSNAV Quartz or the Tornek-Rayville TR-660 Sapphire Non-date?

The Tornek-Rayville TR-660 Sapphire Non-date is rated to 200m versus 60m for the Marathon Steel Navigator SSNAV Quartz.

Which has a longer power reserve, the Marathon Steel Navigator SSNAV Quartz 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 Steel Navigator SSNAV Quartz.

What movement does the Marathon Steel Navigator SSNAV Quartz run compared to the Tornek-Rayville TR-660 Sapphire Non-date?

The Marathon Steel Navigator SSNAV Quartz runs a quartz caliber (Swiss High-Torque Quartz), while the Tornek-Rayville TR-660 Sapphire Non-date runs a automatic (TMI NH38).

Side by side

Marathon Steel Navigator SSNAV QuartzvsTornek-Rayville TR-660 Sapphire Non-date

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

Marathon Steel Navigator SSNAV Quartz

41mm-steel-navigator-ssnav-on-ballistic-nylon

MSRP $1,000

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

Steel Navigator SSNAV Quartz41mm

TR-660 Sapphire Non-date40mm

Power Reserve

Steel Navigator SSNAV Quartz40h

TR-660 Sapphire Non-date50h

Water Resistance

Steel Navigator SSNAV Quartz60m

TR-660 Sapphire Non-date200m

MSRP

Steel Navigator SSNAV Quartz$1,000

TR-660 Sapphire Non-date—

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Lume

None

Superluminova

Movement

3 specs

Caliber

Swiss High-Torque Quartz

TMI NH38

Type

Quartz

Automatic

Power Reserve

40h

50h

Pricing

1 specs

MSRP

$1,000

—

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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 Steel Navigator SSNAV Quartz

The Marathon Steel Navigator SSNAV Quartz is widely praised for its highly accurate Swiss Made ETA F06.412 PreciDrive movement, with stated accuracy of ±10 seconds per year, and its constant low-light visibility from self-illuminating tritium tubes. Owners find the watch comfortable and impressive, noting its 41mm sandblasted steel case with an asymmetrical design, bi-directional GMT bezel with excellent action, sapphire crystal, and 100m water resistance with a screw-down crown. On balance, owners and reviewers rate the Marathon Steel Navigator SSNAV Quartz highly for its robust tool watch design and exceptional accuracy at its price point.

A Blog to Watch·2

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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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