Frederique Constant Slimline Moonphase Manufacture vs Maurice Lacroix Aikon Automatic
Frederique Constant's dress watch meets Maurice Lacroix's diver
Quick Verdict
The Maurice Lacroix Aikon Automatic ($1,500–$2,500) delivers Automatic (Sellita SW200-1 base) technology in the tier below the Frederique Constant Slimline Moonphase Manufacture ($2,500–$5,000). The Aikon Automatic measures 42mm and is rated 200m (20 ATM). The Slimline Moonphase Manufacture justifies its premium with Swiss Made heritage and Automatic FC-705 (In-House). 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 | Frederique Constant Slimline Moonphase Manufacture | Maurice Lacroix Aikon Automatic |
|---|---|---|
| Price | $2,500–$5,000 | $1,500–$2,500 |
| Case Size | 42mm | 42mm |
| Movement | Automatic FC-705 (In-House) | Automatic ML115 |
| Caliber Type | In-House Automatic Manufacture | Automatic (Sellita SW200-1 base) |
| Power Reserve | 42 Hours | 38 Hours |
| Water Resistance | 30m (3 ATM) | 200m (20 ATM) |
| Crystal | Convex Sapphire | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Frederique Constant's design language vs Maurice Lacroix's approach
The Frederique Constant Slimline Moonphase Manufacture features a Stainless Steel case at 42mm with Convex Sapphire protection. The Maurice Lacroix Aikon Automatic offers Stainless Steel construction at 42mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic FC-705 (In-House) vs Automatic ML115
The Slimline Moonphase Manufacture runs the Automatic FC-705 (In-House) (In-House Automatic Manufacture, 42 Hours power reserve) at 28,800 vph (4 Hz) frequency. The Aikon Automatic uses the Automatic ML115 (Automatic (Sellita SW200-1 base), 38 Hours reserve) at 28,800 vph (4 Hz). The Slimline Moonphase Manufacture edges ahead on power reserve.
Wearability & Fit
42mm vs 42mm — different wrist presence
At 42mm, the Slimline Moonphase Manufacture is similarly sized compared to the Aikon Automatic at 42mm. Water resistance differs: 30m (3 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Maurice Lacroix sits in the lower tier
The Frederique Constant Slimline Moonphase Manufacture sits at $2,500–$5,000 and the Maurice Lacroix Aikon Automatic at $1,500–$2,500. On the specs that outlast any price: the Slimline Moonphase Manufacture uses Convex Sapphire with 42 Hours, against Sapphire Crystal and 38 Hours on the Aikon Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 200m (20 ATM)
The Slimline Moonphase Manufacture is rated to 30m (3 ATM) while the Aikon Automatic handles 200m (20 ATM). The Aikon Automatic offers superior water resistance.
Materials Face-Off
| Component | Frederique Constant Slimline Moonphase Manufacture | Maurice Lacroix Aikon Automatic |
|---|---|---|
| Case alloy | Stainless steel 316L (standard mid-range Swiss spec) | Medical-grade 316L stainless steel with alloy composition: Fe (~65%), Cr (16–18%), Ni (10–14%), Mo (2–3%), Mn (≤2%), C (≤0.03%). The molybdenum content prevents pitting corrosion in chlorinated and saltwater environments. Mixed finishing — polished bezel arms and case flanks with satin-brushed top surfaces. |
| Crystal | Synthetic sapphire grown via Verneuil process, Mohs 9, convex (domed) profile, anti-reflective coating Mohs 9 | Synthetic corundum crystal (Mohs hardness 9, second only to diamond) with multi-layer anti-reflective coating for glare reduction. Virtually scratch-proof in daily wear. |
| Lume specification | None (dress watch by design) | Stainless steel integrated links with alternating brushed and polished surfaces. Features Maurice Lacroix's proprietary EasyChange quick-release system — spring-loaded pushers on the case flanks allow strap swaps in seconds without tools. |
| Dial finishing | Silver lacquer with applied indices and printed moonphase graphic + pointer date scale | Mechanical hobnail (Clous de Paris) pattern pressed into the dial blank before color application. This traditional guilloche-adjacent technique creates a grid of raised pyramidal studs that catch and refract light from every angle. Uncommon at this price point. |
| Strap | Black or brown calfskin leather with signed Frederique Constant buckle | Applied to the hands and hour markers for legibility in the dark. Maurice Lacroix does not publish the Super-LumiNova grade for this reference, so no emission colour or wavelength is stated. |
Cost of Ownership Compared
The Maurice Lacroix Aikon Automatic saves you $2,780 over 5 years of ownership
Who Should Pick Which
Pick the Frederique Constant Slimline Moonphase Manufacture if…
- Those who prioritize scratch resistance — sapphire crystal
- Dress watch seekers who want understated elegance
Pick the Maurice Lacroix Aikon Automatic if…
- Enthusiasts wanting the integrated-bracelet luxury sports watch look under $2,000
- Daily wearers who need genuine 200m WR with screw-down crown
- Those who value strap versatility — EasyChange is a genuine differentiator
- Buyers who appreciate fine dial craftsmanship (Clous de Paris) at an accessible price
Frederique Constant Slimline Moonphase Manufacture
- Brand recognition below heritage Swiss brands — Longines (1832), Omega, Tudor have stronger name recognition. FC (1988 founding) is a younger brand without the same cultural footprint despite genuine in-house horological credentials
- 42mm wears large for traditional dress watch — modern preference is often 38–40mm for dress; 42mm + slim bezel pushes visual presence larger
- 21mm lug width awkward for aftermarket strap fitment
- 30m WR limits to pure dress use — no swimming, no shower
Maurice Lacroix Aikon Automatic
- Brand recognition gap: Maurice Lacroix doesn't command the instant recognition of Omega, Tudor, or TAG Heuer. Buyers motivated purely by brand cachet may feel the money is better spent on a more recognizable name.
- 38-hour power reserve: Below average for 2026 — most competitors offer 60–80 hours (Tissot PRX Powermatic 80 offers 80h at 1/3 the price). Skip a day wearing it and you'll need to reset time and date.
- Sellita SW200-1 base movement: A proven workhorse with the ML115 26-jewel upgrade, but not in-house. Enthusiasts who prioritize manufacture movements may view this as a drawback at this price point.
- Grey-market erosion: Heavy grey-market discounting ($1,200–$1,500 vs full retail) undermines the brand's luxury positioning and signals weak demand at MSRP.
Our Verdict
Frederique Constant
Slimline Moonphase Manufacture
Choose the Frederique Constant Slimline Moonphase Manufacture if you prioritize In-House Automatic Manufacture engineering, Swiss Made craftsmanship, and 30m (3 ATM) water resistance. At $2,500–$5,000, it delivers Automatic FC-705 (In-House) with 42 Hours power reserve.
Check Price on AmazonMaurice Lacroix
Aikon Automatic
Choose the Maurice Lacroix Aikon Automatic if you value Automatic (Sellita SW200-1 base) technology, Swiss Made heritage, and 42mm proportions. At $1,500–$2,500, the Automatic ML115 with 38 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Frederique Constant Slimline Moonphase Manufacture and Maurice Lacroix Aikon Automatic represent two distinct approaches to fine watchmaking — the Frederique Constant bringing Swiss Made tradition while Maurice Lacroix delivers Swiss Made engineering.
Frequently Asked Questions
More Comparisons
Frederique Constant Slimline Moonphase vs Longines Master Moonphase
Two moonphase dress watches under $5,000
Tag Heuer Carrera Chronograph vs Frederique Constant Slimline Moonphase Manufacture
Tag Heuer's chronograph meets Frederique Constant's dress watch
Tag Heuer Carrera Chronograph vs Maurice Lacroix Aikon Automatic
Tag Heuer's chronograph meets Maurice Lacroix's diver
Explore These Watches
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.