Tudor Black Bay 58 vs Junghans Form A Automatic
Tudor's diver meets Junghans's dress watch
Quick Verdict
The Junghans Form A Automatic (~$1,255) delivers Swiss ETA Base, German-Finished technology at $3,225 less than the Tudor Black Bay 58 (~$4,480). The Black Bay 58 justifies its premium with Swiss Made heritage and Automatic Manufacture Calibre MT5402. Both represent excellent choices in the luxury watch category.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Tudor Black Bay 58 | Junghans Form A Automatic |
|---|---|---|
| Price | ~$4,480 | ~$1,255 |
| Case Size | 39mm | 39.3mm |
| Movement | Automatic Manufacture Calibre MT5402 | Automatic J800.2 (ETA 2824-2) |
| Caliber Type | In-House Automatic Manufacture (Kenissi) | Swiss ETA Base, German-Finished |
| Power Reserve | 70 Hours | 38 Hours |
| Water Resistance | 200m (20 ATM) | 50m (5 ATM) |
| Crystal | Domed Sapphire | Flat Sapphire with Anti-Reflective Coating |
| Case Material | 316L Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Germany |
Category-by-Category Analysis
Design & Aesthetics
Tudor's design language vs Junghans's approach
Movement & Performance
Automatic Manufacture Calibre MT5402 vs Automatic J800.2 (ETA 2824-2)
Wearability & Fit
39mm vs 39.3mm — different wrist presence
Value & Cost of Ownership
Junghans is $3,225 more affordable
Water Resistance
200m (20 ATM) vs 50m (5 ATM)
Materials Face-Off
| Component | Tudor Black Bay 58 | Junghans Form A Automatic |
|---|---|---|
| In-House MT5402 Caliber | Fully in-house manufacture at Kenissi (Le Locle). 26mm × 4.99mm, 27 jewels, free-sprung balance with variable inertia regulation | 316L stainless steel — standard grade for mid-range watchmaking. Hypoallergenic, corrosion-resistant. |
| Silicon Balance Spring | Si hairspring providing antimagnetic protection and superior isochronism | Flat sapphire (Mohs 9) with anti-reflective coating on the underside — provides excellent clarity with minimal internal glare. Note — Unlike the Max Mohs 9 |
| Domed Sapphire Crystal | Synthetic corundum (Al₂O₃) grown via Verneuil process, anti-reflective coating on inner surface Mohs 9 | Tinted mineral glass (smoke/grey tint) — provides partial view of the movement while maintaining a subtle aesthetic. |
| Anodized Aluminum Bezel | Anodized aluminum insert with engraved 60-minute dive scale — deliberately not ceramic | Brass-base dial with matte silver lacquer finish, embossed (stamped) square minute track producing three-dimensional relief. |
| 316L Stainless Steel | Medical-grade 316L (Cr 16–18%, Ni 10–14%, Mo 2–3%). Satin-brushed tops, polished bevels | Black calfskin leather with polished stainless steel pin buckle. Leather is adequate quality but not luxury-grade. |
Cost of Ownership Compared
The Junghans Form A Automatic saves you $2,337 over 5 years of ownership
Who Should Pick Which
Pick the Tudor Black Bay 58 if…
- True in-house COSC-certified manufacture movement at sub-$4,000
- 39mm "perfect proportions" — fits virtually any wrist from 6" to 8"
- Heritage collectors — direct lineage to the 1958 Tudor Submariner Reference 7924
- Wilsdorf Foundation (Rolex sister) pedigree without the waitlist or pricing
- 10-year service interval — longest in Swiss watchmaking, an explicit confidence statement
Pick the Junghans Form A Automatic if…
- Enthusiasts wanting proven Swiss/Japanese quality in the $1,000–$2,000 sweet spot
- Those who prioritize scratch resistance — sapphire crystal
- Dress watch seekers who want understated elegance
Tudor Black Bay 58
- No date complication — a feature for purists, but a limitation for daily-wearer buyers who want at-a-glance date
- 316L not 904L — Tudor uses standard steel, not Rolex's "Oystersteel" (practically irrelevant for the wearer)
- Aluminum bezel insert scratches more easily than ceramic — heritage-correct, but less daily-wear robust
- Bracelet endlinks are proprietary — limits aftermarket bracelet options (straps still work via drilled lug holes)
Junghans Form A Automatic
- ETA 2824-2 at $1,450 — fair value but not prestige movement. NOMOS offers in-house at $1,680.
- 38-hour power reserve — leaves unworn for a weekend and it's stopped by Monday
- No lume / dress-only — not versatile for active or outdoor use
- Limited US distribution — difficult to try on in person outside major cities
Our Verdict
Tudor
Black Bay 58
Choose the Tudor Black Bay 58 if you prioritize In-House Automatic Manufacture (Kenissi) engineering, Swiss Made craftsmanship, and 200m (20 ATM) water resistance. At ~$4,480, it delivers Automatic Manufacture Calibre MT5402 with 70 Hours power reserve.
Check Price on AmazonJunghans
Form A Automatic
Choose the Junghans Form A Automatic if you value Swiss ETA Base, German-Finished technology, Made in Germany heritage, and 39.3mm proportions. At ~$1,255, the Automatic J800.2 (ETA 2824-2) with 38 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Tudor Black Bay 58 and Junghans Form A Automatic represent two distinct approaches to fine watchmaking — the Tudor bringing Swiss Made tradition while Junghans delivers Made in Germany engineering.