Junghans Form A Automatic vs Longines Master Collection Moonphase
Two dress watchs compared — $1,000–$1,500 vs $2,500–$5,000
Quick Verdict
The Junghans Form A Automatic ($1,000–$1,500) offers Swiss ETA Base, German-Finished precision in the tier below the Longines Master Collection Moonphase ($2,500–$5,000). The Form A Automatic measures 39.3mm and is rated 50m (5 ATM). The Master Collection Moonphase counters with Swiss Made craftsmanship and 30m (3 ATM) water resistance. Both are exceptional dress watchs for their respective tiers.
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Specifications Compared
| Feature | Junghans Form A Automatic | Longines Master Collection Moonphase |
|---|---|---|
| Price | $1,000–$1,500 | $2,500–$5,000 |
| Case Size | 39.3mm | 40mm |
| Movement | Automatic J800.2 (ETA 2824-2) | Automatic Caliber L899 |
| Caliber Type | Swiss ETA Base, German-Finished | Automatic (ETA A31.L91 base) |
| Power Reserve | 38 Hours | 72 Hours |
| Water Resistance | 50m (5 ATM) | 30m (3 ATM) |
| Crystal | Flat Sapphire with Anti-Reflective Coating | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Germany | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Junghans's design language vs Longines's approach
The Junghans Form A Automatic features a Stainless Steel case at 39.3mm with Flat Sapphire with Anti-Reflective Coating protection. The Longines Master Collection Moonphase offers Stainless Steel construction at 40mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic J800.2 (ETA 2824-2) vs Automatic Caliber L899
The Form A Automatic runs the Automatic J800.2 (ETA 2824-2) (Swiss ETA Base, German-Finished, 38 Hours power reserve) at 28,800 vph (4 Hz) frequency. The Master Collection Moonphase uses the Automatic Caliber L899 (Automatic (ETA A31.L91 base), 72 Hours reserve) at 25,200 vph (3.5 Hz). The Master Collection Moonphase offers a longer power reserve.
Wearability & Fit
39.3mm vs 40mm — different wrist presence
At 39.3mm, the Form A Automatic wears more compactly on smaller wrists compared to the Master Collection Moonphase at 40mm. Water resistance differs: 50m (5 ATM) vs 30m (3 ATM).
Value & Cost of Ownership
Junghans sits in the lower tier
The Junghans Form A Automatic sits at $1,000–$1,500 and the Longines Master Collection Moonphase at $2,500–$5,000. On the specs that outlast any price: the Form A Automatic uses Flat Sapphire with Anti-Reflective Coating with 38 Hours, against Sapphire Crystal and 72 Hours on the Master Collection Moonphase. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 30m (3 ATM)
The Form A Automatic is rated to 50m (5 ATM) while the Master Collection Moonphase handles 30m (3 ATM). The Form A Automatic is better suited for water activities.
Materials Face-Off
| Component | Junghans Form A Automatic | Longines Master Collection Moonphase |
|---|---|---|
| Case alloy | 316L stainless steel — standard grade for mid-range watchmaking. Hypoallergenic, corrosion-resistant. | Stainless steel 316L (standard mid-range Swiss spec). |
| Crystal | Flat sapphire (Mohs 9) with anti-reflective coating on the underside — provides excellent clarity with minimal internal glare. Note — Unlike the Max Mohs 9 | Synthetic sapphire grown via Verneuil process, Mohs 9, anti-reflective coating on interior. Mohs 9 |
| Caseback crystal | Tinted mineral glass (smoke/grey tint) — provides partial view of the movement while maintaining a subtle aesthetic. | None (dress watch by design). |
| Dial material | Brass-base dial with matte silver lacquer finish, embossed (stamped) square minute track producing three-dimensional relief. | Barleycorn guilloché — fine textured pattern resembling barley seed heads, machine-engraved or stamped into the dial brass disc. One of horology's cl |
| Strap | Black calfskin leather with polished stainless steel pin buckle. Leather is adequate quality but not luxury-grade. | Blued steel via thermal treatment (heat-blued) or chemical bluing process. |
Cost of Ownership Compared
The Junghans Form A Automatic saves you $1,225 over 5 years of ownership
Who Should Pick Which
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
Pick the Longines Master Collection Moonphase if…
- Weekend warriors — 72-hour power reserve means it survives two days off the wrist
- Those who prioritize scratch resistance — sapphire crystal
- Dress watch seekers who want understated elegance
Junghans Form A Automatic
- ETA 2824-2 at a $1,000–$1,500 band price — fair value but not prestige movement. NOMOS offers in-house for only slightly more.
- 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
Longines Master Collection Moonphase
- ETA A31 base at this price — though Longines-exclusive, the architecture is shared platform. Some buyers expect in-house at this price.
- 30m water resistance — strictly dress watch use; no swimming, no shower
- Moonphase indication is rough — like most "simple" moonphase movements, the 29.5-day approximation is imprecise vs. actual 29.53-day lunar cycle (requires ~1-day adjustment every 2.5 years)
- 3.5 Hz frequency is unusual — not as smooth as 4 Hz peers
Our Verdict
Junghans
Form A Automatic
Choose the Junghans Form A Automatic if you prioritize Swiss ETA Base, German-Finished engineering, Made in Germany craftsmanship, and 50m (5 ATM) water resistance. At $1,000–$1,500, it delivers Automatic J800.2 (ETA 2824-2) with 38 Hours power reserve.
Check Price on AmazonLongines
Master Collection Moonphase
Choose the Longines Master Collection Moonphase if you value Automatic (ETA A31.L91 base) technology, Swiss Made heritage, and 40mm proportions. At $2,500–$5,000, the Automatic Caliber L899 with 72 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Junghans Form A Automatic and Longines Master Collection Moonphase represent two distinct approaches to the dress watch category — the Junghans bringing Made in Germany tradition while Longines delivers Swiss Made engineering.
Frequently Asked Questions
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How This Page Was Made
Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.