Timefactors · Microbrand · United Kingdom

Timefactors Smiths Navigator PRS-48

Ref. PRS-48 · In production · Pilot

Design reference: Mk 11 RAF navigator's watch (IWC / Jaeger-LeCoultre, 1949)

Timefactors Smiths Navigator PRS-48, semi-matte black Mk 11-style dial with white numerals and lumed triangle, on leather strap
Photo: Timefactors
  • Timefactors Smiths Navigator PRS-48, semi-matte white dial with black numerals, on leather strap
From $660
  • Sellita SW210-1
  • 36 mm × 11.3 mm
  • Sapphire crystal
  • 100 m water resistance

Movement

Type
Hand-wound
Tier
Upper
Complications
Hours, Minutes, Seconds
Frequency
28,800 bph
Power reserve
45 h
Hacking
Yes
Accuracy (factory)
—
Grade
Top

Case

Diameter
36 mm
Lug to lug
46.4 mm
Thickness
11.3 mm
Lug width
18 mm
Material
Steel (316L)
Hardening
—
Water resistance
100 m
Crown
—
Case back
—
Bezel
—
Finishing
Brushed with polished bezel, drilled lugs

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Inner
Lume
Super-LumiNova X1-C3

Bracelet

Bracelet
Not offered

Straps

Strap 1
Leather, Pigskin strap with push-button deployant clasp

Weight

Head only
—
On bracelet
—
On strap
77 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Msrp495 GBPincl. VAT$6602026-10-24link

Variants

NameDial
Blacksemi-matte black
Whitesemi-matte white

About this entry

87% of key specs known. Missing: hardening, crown.

A revival of the Mk 11 navigator's watch issued to the RAF from 1949 (made by IWC and Jaeger-LeCoultre to the Air Ministry specification), with the 1952 shorter, thicker hour hand, 20,000 A/m anti-magnetism and a sapphire crystal. Product page: 316L steel, brushed with polished bezel, 36mm, 46.4mm lug-to-lug, 11.3mm to the top of the crystal, 18mm drilled lugs, full anti-magnetic cage, 10ATM/100m, screw back, 77g with strap; sapphire 30.7mm x 1.8mm with AR on the underside; Super-LumiNova X1-C3 on the triangle, cardinal indices and hands; NATO stock number 6645-99-501-2680. Sellita SW210 "Top" (19 jewels, Incabloc, hacking, decorated, 28,800 bph), "adjusted in five positions; accuracy of +/-4 sec/day up to +/-15 sec/day" (Sellita's Top-grade figures), no date: the dial has no date window, so the SW210's date is not shown. Pigskin strap with push-button deployant. Case and bracelet made in Hong Kong, movement Swiss. Sold out on 2026-10-25: "Now in production. Next Availability Spring 2027 (TBC)".

Last verified: 2026-10-25. Edit or correct this entry.

Sources