Aragon · Microbrand · United States
Aragon Regeneron 50mm (Seiko NH70)
- Seiko NH70A
- 50 mm × 15 mm
- K1 mineral crystal
- 200 m water resistance
Where to buy
Movement
- Caliber
- Seiko NH70A
- Type
- Automatic
- Tier
- Entry
- Complications
- Skeleton
- Frequency
- 21,600 bph
- Power reserve
- 41 h
- Hacking
- Yes
- Accuracy (factory)
- -20 / +40 s/day
Case
- Diameter
- 50 mm
- Lug to lug
- —
- Thickness
- 15 mm
- Lug width
- 24 mm
- Material
- —
- Hardening
- —
- Water resistance
- 200 m
- Crown
- Screw-down
- Case back
- —
- Bezel
- Unidirectional, lumed
- Colour coating
- black IP (bracelet per the brand; the case is black in the photo too)
Crystal & dial
- Crystal
- K1 mineral
- Shape
- —
- Anti-reflective
- —
- Lume
- T-100 tritium gas tubes (21 on the dial, 3 on the hands)
Bracelet & clasp
- Style
- —
- Links per row
- —
- Solid end links
- —
- Solid links
- —
- Link attachment
- —
- Taper
- —
- Quick release
- —
- Half links
- —
- Clasp
- Push-button fold-over
- Micro-adjust
- —
- Diver extension
- —
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
- Stated weight (basis not given)
- 275 g
Prices
| Variant | Configuration | Type | Price | USD | As of | Source |
|---|---|---|---|---|---|---|
| Silver, Black IP | — | Msrp | 280 USD | $280 | 2026-11-01 | link |
Variants
| Name | Reference | Dial |
|---|---|---|
| Silver, Black IP | A431SLV | silver skeleton |
About this entry
58% of key specs known. Missing: lug-to-lug, case material, hardening, AR coating, bracelet links, end links, link attachment, clasp micro-adjust.
Sold as "Regeneron T100 Skeleton 50mm" (listing "Regeneron T100 Tritium Tube NH70 skeleton", code A431SLV). Brand spec list: "SII NH70 skeleton automatic movement 24 jewels", movement from Japan; 50mm case, 15mm thick (not said whether with the crystal; lug to lug not stated); "K1 Crystal"; "Unidirectional rotating bezel" with a "Full lume minute marker"; screw-down crown; bracelet "Stainless steel (IP black)", 9" long and 24mm wide (lug width taken from the bracelet width), "Solid fliplock push button deployant clasp"; "200 meters - 660 feet"; weight 9.7 oz (recorded as 275g, not said what was weighed); "T-100 tritium 21 tubes on dial and 3 tubes on hour, minute and second hands". T100 is the tritium, not the movement. Case material and case back aren't stated. The dial colour isn't named; the product code (SLV) and photo show a silver skeleton dial. The 43mm version is regeneron-43mm-seiko-nh70.yaml. On 2026-11-01: Silver, Black IP $280, in stock.
Last verified: 2026-11-01. Edit or correct this entry.
Sources
- Aragon, Regeneron T100 Skeleton 50mm product page (A431SLV) accessed 2026-11-01