Tudor Black Bay 58 vs Maurice Lacroix Aikon Automatic
Two divers compared — $2,500–$5,000 vs $1,500–$2,500
Quick Verdict
The Maurice Lacroix Aikon Automatic ($1,500–$2,500) delivers Automatic (Sellita SW200-1 base) technology in the tier below the Tudor Black Bay 58 ($2,500–$5,000). The Aikon Automatic measures 42mm and is rated 200m (20 ATM). The Black Bay 58 justifies its premium with Swiss Made heritage and Automatic Manufacture Calibre MT5402. Both represent excellent choices in the diver 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 | Maurice Lacroix Aikon Automatic |
|---|---|---|
| Price | $2,500–$5,000 | $1,500–$2,500 |
| Case Size | 39mm | 42mm |
| Movement | Automatic Manufacture Calibre MT5402 | Automatic ML115 |
| Caliber Type | In-House Automatic Manufacture (Kenissi) | Automatic (Sellita SW200-1 base) |
| Power Reserve | 70 Hours | 38 Hours |
| Water Resistance | 200m (20 ATM) | 200m (20 ATM) |
| Crystal | Domed Sapphire | Sapphire Crystal |
| Case Material | 316L Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Tudor's design language vs Maurice Lacroix's approach
The Tudor Black Bay 58 features a 316L Stainless Steel case at 39mm with Domed 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 Manufacture Calibre MT5402 vs Automatic ML115
The Black Bay 58 runs the Automatic Manufacture Calibre MT5402 (In-House Automatic Manufacture (Kenissi), 70 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 Black Bay 58 edges ahead on power reserve.
Wearability & Fit
39mm vs 42mm — different wrist presence
At 39mm, the Black Bay 58 wears more compactly on smaller wrists compared to the Aikon Automatic at 42mm. Water resistance differs: 200m (20 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Maurice Lacroix sits in the lower tier
The Tudor Black Bay 58 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 Black Bay 58 uses Domed Sapphire with 70 Hours, against Sapphire Crystal and 38 Hours on the Aikon Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 200m (20 ATM)
The Black Bay 58 is rated to 200m (20 ATM) while the Aikon Automatic handles 200m (20 ATM). Both offer identical water resistance ratings.
Materials Face-Off
| Component | Tudor Black Bay 58 | Maurice Lacroix Aikon 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 | 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. |
| Silicon Balance Spring | Si hairspring providing antimagnetic protection and superior isochronism | 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. |
| Domed Sapphire Crystal | Synthetic corundum (Al₂O₃) grown via Verneuil process, anti-reflective coating on inner surface Mohs 9 | 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. |
| Anodized Aluminum Bezel | Anodized aluminum insert with engraved 60-minute dive scale — deliberately not ceramic | 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. |
| 316L Stainless Steel | Medical-grade 316L (Cr 16–18%, Ni 10–14%, Mo 2–3%). Satin-brushed tops, polished bevels | 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 $1,903 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 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
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)
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
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 $2,500–$5,000, it delivers Automatic Manufacture Calibre MT5402 with 70 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 Tudor Black Bay 58 and Maurice Lacroix Aikon Automatic represent two distinct approaches to the diver category — the Tudor bringing Swiss Made tradition while Maurice Lacroix delivers Swiss Made engineering.
Frequently Asked Questions
More Comparisons
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.