Head-to-Head Comparison

Casio MTP-S120L Solar Field vs Longines HydroConquest Automatic

Casio's field watch meets Longines's diver

Quick Verdict

The Casio MTP-S120L Solar Field ($100–$150) offers Casio Tough Solar Quartz precision at $1,400 less than the Longines HydroConquest Automatic ($1,500–$2,500). The HydroConquest Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional watches for their respective price points.

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Casio MTP-S120L Solar Field

Casio

MTP-S120L Solar Field

$100–$150

Longines HydroConquest Automatic

Longines

HydroConquest Automatic

$1,500–$2,500

Specifications Compared

FeatureCasio MTP-S120L Solar FieldLongines HydroConquest Automatic
Price$100–$150$1,500–$2,500
Case Size44.5mm41mm
MovementSolar-Powered QuartzAutomatic L888.5
Caliber TypeCasio Tough Solar QuartzETA-Based Automatic with Silicon Balance Spring
Power ReserveMonths on a full solar charge; no battery replacement72 Hours
Water Resistance100m (10 ATM)300m (30 ATM)
CrystalMineral CrystalSapphire with Anti-Reflective Coating
Case MaterialStainless SteelStainless Steel
OriginCasio (Japan)Swiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Longines's approach

⚙️

Movement & Performance

Edge: Longines

Solar-Powered Quartz vs Automatic L888.5

📏

Wearability & Fit

Edge: Longines

44.5mm vs 41mm — different wrist presence

💰

Value & Cost of Ownership

Edge: Casio

Casio is $1,400 more affordable

💧

Water Resistance

Edge: Longines

100m (10 ATM) vs 300m (30 ATM)

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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Longines

HydroConquest Automatic

Choose the Longines HydroConquest Automatic if you value ETA-Based Automatic with Silicon Balance Spring technology, Swiss Made heritage, and 41mm proportions. At $1,500–$2,500, the Automatic L888.5 with 72 Hours power reserve makes it a compelling choice.

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The Bottom Line

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

Frequently Asked Questions