Head-to-Head Comparison

Updated September 5, 2026

Casio MTP-S120L Solar Field vs Maurice Lacroix Aikon Automatic

Casio's field watch meets Maurice Lacroix's diver

Quick Verdict

The Casio MTP-S120L Solar Field ($100–$150) offers Casio Tough Solar Quartz precision in the tier below the Maurice Lacroix Aikon Automatic ($1,500–$2,500). The MTP-S120L Solar Field measures 42mm (49 x 42 x 10.9mm) and is rated 100m (10 ATM). The Aikon Automatic counters with Swiss Made craftsmanship and 200m (20 ATM) water resistance. Both are exceptional watches for their respective tiers.

CasioMTP-S120L Solar Field$100–$150 Check price View the dossier

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Casio

MTP-S120L Solar Field

$100–$150

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Maurice Lacroix

Aikon Automatic

$1,500–$2,500

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Specifications Compared

Feature	Casio MTP-S120L Solar Field	Maurice Lacroix Aikon Automatic
Price	$100–$150	$1,500–$2,500
Case Size	42mm (49 x 42 x 10.9mm)	42mm
Movement	Solar-Powered Quartz	Automatic ML115
Caliber Type	Casio Tough Solar Quartz	Automatic (Sellita SW200-1 base)
Power Reserve	Months on a full solar charge; no battery replacement	38 Hours
Water Resistance	100m (10 ATM)	200m (20 ATM)
Crystal	Mineral Crystal	Sapphire Crystal
Case Material	Stainless Steel	Stainless Steel
Origin	Casio (Japan)	Swiss Made

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Casio's design language vs Maurice Lacroix's approach

The Casio MTP-S120L Solar Field features a Stainless Steel case at 42mm (49 x 42 x 10.9mm) with Mineral Crystal 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.

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Movement & Performance

Edge: Maurice Lacroix

Solar-Powered Quartz vs Automatic ML115

The MTP-S120L Solar Field runs the Solar-Powered Quartz (Casio Tough Solar Quartz, Months on a full solar charge; no battery replacement power reserve) at standard frequency. The Aikon Automatic uses the Automatic ML115 (Automatic (Sellita SW200-1 base), 38 Hours reserve) at 28,800 vph (4 Hz). The Aikon Automatic offers a longer power reserve.

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Wearability & Fit

Edge: Draw

42mm (49 x 42 x 10.9mm) vs 42mm — different wrist presence

At 42mm (49 x 42 x 10.9mm), the MTP-S120L Solar Field is similarly sized compared to the Aikon Automatic at 42mm. Water resistance differs: 100m (10 ATM) vs 200m (20 ATM).

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Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio MTP-S120L Solar Field sits at $100–$150 and the Maurice Lacroix Aikon Automatic at $1,500–$2,500. On the specs that outlast any price: the MTP-S120L Solar Field uses Mineral Crystal with Months on a full solar charge; no battery replacement, against Sapphire Crystal and 38 Hours on the Aikon Automatic. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Maurice Lacroix

100m (10 ATM) vs 200m (20 ATM)

The MTP-S120L Solar Field is rated to 100m (10 ATM) while the Aikon Automatic handles 200m (20 ATM). The Aikon Automatic offers superior water resistance.

Our Verdict

Casio

MTP-S120L Solar Field

Choose the Casio MTP-S120L Solar Field if you prioritize Casio Tough Solar Quartz engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At $100–$150, it delivers Solar-Powered Quartz with Months on a full solar charge; no battery replacement power reserve.

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Maurice 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.

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The Bottom Line

The Casio MTP-S120L Solar Field and Maurice Lacroix Aikon Automatic represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Maurice Lacroix delivers Swiss Made engineering.

Frequently Asked Questions

The Maurice Lacroix Aikon Automatic is the better buy if you want a mechanical movement; the Casio MTP-S120L Solar Field is the better buy if you want solar power and quartz accuracy with no servicing. For water, the Maurice Lacroix Aikon Automatic is rated 200 m against 100 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Casio MTP-S120L Solar Field sits a band lower ($100–$150 against $1,500–$2,500), so it is the cheaper way into the category. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.

The Casio MTP-S120L Solar Field offers better upfront value, sitting a tier lower at $100–$150. However, the Maurice Lacroix Aikon Automatic may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The MTP-S120L Solar Field at 42mm (49 x 42 x 10.9mm) with 100m (10 ATM) water resistance handles everyday situations. The Aikon Automatic at 42mm with 200m (20 ATM) is similarly capable. The MTP-S120L Solar Field uses Mineral Crystal while the Aikon Automatic uses Sapphire Crystal. Sapphire resists scratches noticeably better than mineral glass.

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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.