TUDOR · Ranger
TUDOR Ranger M79950-0008: specifications and what to check
A field watch rather than a diver: fixed brushed bezel, 100 metres rather than 200, and a beige dial that behaves unlike the black and blue options when it comes to marks.
Reference M79950-0008 · specifications read from the manufacturer on 2026-09-22 · listed as current
Specifications
As published by TUDOR. A field the manufacturer does not state is left out rather than filled in.
- Case
- 39mm steel case, satin finish
- Diameter
- 39 mm
- Thickness
- 12 mm
- Lug width
- 20 mm
- Water resistance
- Waterproof to 100m (330 ft)
- Crystal
- Domed sapphire crystal
- Bezel
- Smooth satin-brushed steel
- Dial
- Beige, domed
- Crown
- Screw-down winding crown in steel with the TUDOR rose in relief
- Bracelet
- Steel bracelet with three links
- Clasp
- Folding clasp with the TUDOR "T-fit" safety catch
Movement
- Calibre
- Manufacture Calibre MT5402
- Type
- Self-winding mechanical movement with bidirectional rotor system
- Power reserve
- Power reserve of approximately 70 hours
- Certification
- COSC
What to check before you buy
- Examine the beige dial under strong light for discolouration. A light dial shows moisture marks, fingerprints and ageing that a black one hides entirely, and it is the first place a problem with case sealing becomes visible.
- Note the rating is 100 metres, not the 200 of the dive references. Describe it correctly — a buyer assuming parity with a Black Bay has been misled, whether or not anyone intended it.
- Run a fingernail across the fixed bezel and the case flank. The whole exterior is satin, so a stray polished patch from a careless refinish stands out badly and is hard to correct.
- Check the crown threads engage cleanly. A screw-down crown on a 100m case is the seal, and cross-threading here is both common and consequential.
- Confirm the bracelet's safety catch latches. It is a simpler clasp than the dive models carry, and a catch that does not hold is an immediate return.
Not a diver, and it matters commercially
The Ranger is a field watch. The bezel is fixed, smooth, satin-brushed steel — there is nothing to rotate and nothing to time with. Water resistance is 100 metres, half what the dive references carry.
Neither is a shortcoming; both are the design. They become a problem only when a listing borrows language from the rest of the catalogue and a buyer arrives expecting a dive watch. If you sell one, say plainly what it is.
The beige dial is a condition indicator
This is the genuinely useful thing about this reference from an inspection standpoint. A beige, domed dial hides nothing. Moisture ingress, handling marks, uneven ageing and past service work all read clearly against a light surface, where a black dial would conceal every one of them.
That cuts both ways for a dealer. It makes the watch easier to assess honestly, and it makes any flaw you accept harder to sell past later. Photograph it in daylight and record what you see on a condition report rather than hoping the buyer's lighting is kinder than yours.
All satin, everywhere
The case is satin finished throughout, with no polished contrast surfaces to break it up. That gives the watch its utilitarian look and creates one specific risk: a refinish done by someone accustomed to mixed-finish cases can leave a polished patch where none belongs.
Look along the case flank at a shallow angle. Inconsistent grain direction is the tell, and it is far easier to spot than to repair.
The calibre is the plain one
MT5402, chronometer certified by COSC, with roughly seventy hours of reserve. No METAS certification here, so do not import that claim from other references in the range — an accurate description is worth more than an impressive one, and the difference is checkable in seconds.
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Sources
Not affiliated with TUDOR. Specifications are read from the manufacturer's own published documentation on the date shown and may change; the manufacturer's current documentation governs.