Timefactors · Microbrand · United Kingdom

Timefactors Smiths Monopusher PRS-57

Ref. PRS-57 · Discontinued · 2021 · Chronograph, Pilot

From $1,260
  • Sellita SW510
  • 40 mm × 15 mm
  • Sapphire crystal
  • 100 m water resistance

Where to buy

Movement

Type
Automatic
Tier
Upper
Complications
Hours, Minutes, Small seconds, Chronograph
Frequency
28,800 bph
Power reserve
62 h
Hacking
Yes
Accuracy (factory)
—
Modifications
SW510 MP monopusher execution (single pusher at 2)

Case

Diameter
40 mm
Lug to lug
46 mm
Thickness
15 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
100 m
Crown
Screw-down
Case back
—
Bezel
—
Finishing
Brushed, drilled lugs

Crystal & dial

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

Bracelet

Bracelet
Not offered

Straps

Strap 1
Sailcloth, Custom sailcloth strap with leather backing; two supplied (one fitted)

Weight

Head only
—
On bracelet
—
On strap
95 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Msrp945 GBPincl. VAT$1,2602026-10-24link

Variants

NameDial
Blackblack
Whitecream

About this entry

93% of key specs known. Missing: hardening.

Timefactors' first monopusher chronograph, listed in November 2021 and now marked "SOLD OUT & DISCONTINUED". Product page: 316L brushed steel, 40mm, 46mm lug-to-lug, 15mm to the top of the crystal, 20mm drilled lugs, full anti-magnetic cage (20,000 A/m), 100m, 95g including strap, screw back, screw-down crown; flat sapphire with AR on the underside. Black: matte black dial with white markings and white painted hands. White: cream dial with blue markings and heat-blued steel hands. Super-LumiNova X1-C3 on both. Movement: "Sellita SW510 MP, 27 jewels, Automatic, 28,800 BPH, 62 Hour Power reserve", linked to the SW510 file (whose base version has a 12-hour counter and date); the photos show running seconds at 9 and a 30-minute counter at 3, a single pusher at 2 and no date window, so complications are set from the photos. The store tags say "36mm" and "Hand Wound", against the specification's 40mm and automatic movement (the product type also says automatic); the specification is recorded. Supplied in a three-watch travel roll with two sailcloth straps. Price as last listed.

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

Sources