Timefactors · Microbrand · United Kingdom
Timefactors Armstrong Siddeley PRS-41
- ETA 6498-1
- 42 mm × 12 mm
- Sapphire crystal
- 100 m water resistance
Where to buy
Movement
- Caliber
- ETA 6498-1
- Type
- Hand-wound
- Tier
- Upper
- Complications
- Small seconds
- Frequency
- 18,000 bph
- Power reserve
- 46 h
- Hacking
- No
- Accuracy (factory)
- —
- Modifications
- Unitas 6498 "extensively modified": screwed Glucydur balance with Nivarox hairspring, swan-neck regulator, 3/4 top plate with Geneva stripes, blued screws
Case
- Diameter
- 42 mm
- Lug to lug
- 52 mm
- Thickness
- 12 mm
- Lug width
- 22 mm
- Material
- Steel (316L)
- Hardening
- —
- Water resistance
- 100 m
- Crown
- —
- Case back
- Display, screw-down
- Bezel
- —
- Finishing
- Polished top, brushed sides
Crystal & dial
- Crystal
- Sapphire
- Shape
- —
- Anti-reflective
- —
- Lume
- None
Bracelet
- Bracelet
- Not offered
Straps
- Strap 1
- Leather, Alligator-grain calf leather with signed deployant clasp
Weight
- Head only
- —
- On bracelet
- —
- On strap
- 90 g
Prices
| Variant | Configuration | Type | Price | USD | As of | Source |
|---|---|---|---|---|---|---|
| All | — | Msrp | 980 GBPincl. VAT | $1,306 | 2026-10-24 | link |
About this entry
80% of key specs known. Missing: hardening, AR coating, crown.
Sold by Timefactors as the "Armstrong Siddeley Ltd Edition - PRS-41", a tribute to the British car maker (Timefactors holds the Armstrong Siddeley trade mark for watches); a limited edition whose size isn't stated ("will only be enjoyed by a limited number of owners"). Product page: 316L steel, 42mm (46mm with crown), 52mm lug-to-lug, 12mm to the top of the crystal, 22mm lugs, anti-magnetic to 4,800 A/m, 100m, 90g including strap, screw-down sapphire display back; cream sterling-silver dial with gold-plated diamond-cut indices and faceted rose-gold-plated Dauphine hands, no lume. The brand names the movement only as "Unitas 6498" (no suffix); it is linked to the ETA 6498-1 file, the database's entry for that caliber. Supplied in a lacquered wooden box with a two-year guarantee. Sold out on 2026-10-25 (page still live).
Last verified: 2026-10-25. Edit or correct this entry.