Lüm-Tec · Microbrand · United States
Lüm-Tec RPM 3
Movement
- Caliber
- Miyota 0S20
- Type
- Quartz
- Tier
- Mid
- Complications
- Hours, Minutes, Small seconds, Chronograph
- Frequency
- n/a
- Power reserve
- n/a
- Hacking
- n/a
- Accuracy (factory)
- -20 / +20 s/month
Case
- Diameter
- 43 mm
- Lug to lug
- 41 mm
- Thickness
- 12.3 mm
- Lug width
- 20 mm
- Material
- Steel (316L)
- Hardening
- Titanium carbide PVD hard coating, on case
- Water resistance
- 50 m
- Crown
- Screw-down
- Case back
- Solid, screws
- Bezel
- —
- Finishing
- Bead-blasted
- Colour coating
- Gunmetal (titanium carbide PVD)
Crystal & dial
- Crystal
- Sapphire
- Shape
- —
- Anti-reflective
- Both sides
- Lume
- Super-LumiNova X1 C3, green glow (MDV Luminous Technology)
Bracelet
- Bracelet
- —
Straps
- Strap 1
- Nylon, Two-piece green and yellow striped nylon military-style strap with gunmetal PVD hardware
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
Prices
| Variant | Configuration | Type | Price | USD | As of | Source |
|---|---|---|---|---|---|---|
| All | — | Msrp | 495 USD | $495 | 2026-10-24 | link |
About this entry
87% of key specs known. Missing: weight, bracelet offered.
Quartz chronograph: the brand names a "Miyota Japan OS20" (Miyota 0S20), with a 60-minute chronograph counter at 9, a 24-hour sub-dial at 3 and small seconds at 6. No date window is visible in the brand's photos, so the date is recorded as absent. Three-layer matte racing dial in green with a yellow and black outer track. Brand specs: 43mm, 41mm lug-to-lug (shorter than the case is wide; the lugs sit under the case in the photos), 20mm lugs, "11.3mm case thickness (12.3mm total with sapphire and caseback)" (12.3mm recorded), 50 m, bead-blasted 316L with a gunmetal titanium carbide PVD hard coating (no hardness given), thick sapphire with double-sided anti-reflective coating, bolt-on solid steel caseback, threaded crown with double Viton seals. No crown guards, from the brand's photos. MDV Luminous Technology with X1 C3 Super-LumiNova on the dial and diamond-cut hands. The page makes no limited-edition claim and the store was selling it on 2026-10-25. Lifetime free battery changes, seal cleaning and pressure testing. Weight is not published. Listing created December 2021, published on the store in January 2022; the current photos date from November 2023.
Last verified: 2026-10-25. Edit or correct this entry.
Sources
- Lüm-Tec, RPM 3 (product page, specifications and price) accessed 2026-10-25