Head-to-Head Comparison

Updated September 5, 2026

Tissot PRX Powermatic 80 vs Casio MTP-S120L Solar Field

Tissot's timepiece meets Casio's field watch

Quick Verdict

The Casio MTP-S120L Solar Field ($100–$150) delivers Casio Tough Solar Quartz technology in the tier below the Tissot PRX Powermatic 80 ($500–$1,000). The MTP-S120L Solar Field measures 42mm (49 x 42 x 10.9mm) and is rated 100m (10 ATM). The PRX Powermatic 80 justifies its premium with Swiss Made heritage and Automatic Powermatic 80.111. Both represent excellent choices in the luxury watch category.

TissotPRX Powermatic 80$500–$1,000 Check price CasioMTP-S120L Solar Field$100–$150 Check price

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Tissot

PRX Powermatic 80

$500–$1,000

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Casio

MTP-S120L Solar Field

$100–$150

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Specifications Compared

Feature	Tissot PRX Powermatic 80	Casio MTP-S120L Solar Field
Price	$500–$1,000	$100–$150
Case Size	40mm	42mm (49 x 42 x 10.9mm)
Movement	Automatic Powermatic 80.111	Solar-Powered Quartz
Caliber Type	In-House Automatic (ETA C07.111 base)	Casio Tough Solar Quartz
Power Reserve	80 Hours	Months on a full solar charge; no battery replacement
Water Resistance	100m (10 ATM)	100m (10 ATM)
Crystal	Scratch-resistant Sapphire	Mineral Crystal
Case Material	316L Stainless Steel	Stainless Steel
Origin	Swiss Made	Casio (Japan)

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Tissot's design language vs Casio's approach

The Tissot PRX Powermatic 80 features a 316L Stainless Steel case at 40mm with Scratch-resistant Sapphire protection. The Casio MTP-S120L Solar Field offers Stainless Steel construction at 42mm (49 x 42 x 10.9mm) with Mineral Crystal. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Tissot

Automatic Powermatic 80.111 vs Solar-Powered Quartz

The PRX Powermatic 80 runs the Automatic Powermatic 80.111 (In-House Automatic (ETA C07.111 base), 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The MTP-S120L Solar Field uses the Solar-Powered Quartz (Casio Tough Solar Quartz, Months on a full solar charge; no battery replacement reserve) at standard. The PRX Powermatic 80 edges ahead on power reserve.

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Wearability & Fit

Edge: Tissot

40mm vs 42mm (49 x 42 x 10.9mm) — different wrist presence

At 40mm, the PRX Powermatic 80 wears more compactly on smaller wrists compared to the MTP-S120L Solar Field at 42mm (49 x 42 x 10.9mm). Water resistance differs: 100m (10 ATM) vs 100m (10 ATM).

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Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Tissot PRX Powermatic 80 sits at $500–$1,000 and the Casio MTP-S120L Solar Field at $100–$150. On the specs that outlast any price: the PRX Powermatic 80 uses Scratch-resistant Sapphire with 80 Hours, against Mineral Crystal and Months on a full solar charge; no battery replacement on the MTP-S120L Solar Field. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Draw

100m (10 ATM) vs 100m (10 ATM)

The PRX Powermatic 80 is rated to 100m (10 ATM) while the MTP-S120L Solar Field handles 100m (10 ATM). Both offer identical water resistance ratings.

Our Verdict

Tissot

PRX Powermatic 80

Choose the Tissot PRX Powermatic 80 if you prioritize In-House Automatic (ETA C07.111 base) engineering, Swiss Made craftsmanship, and 100m (10 ATM) water resistance. At $500–$1,000, it delivers Automatic Powermatic 80.111 with 80 Hours power reserve.

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Casio

MTP-S120L Solar Field

Choose the Casio MTP-S120L Solar Field if you value Casio Tough Solar Quartz technology, Casio (Japan) heritage, and 42mm (49 x 42 x 10.9mm) proportions. At $100–$150, the Solar-Powered Quartz with Months on a full solar charge; no battery replacement power reserve makes it a compelling choice.

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The Bottom Line

The Tissot PRX Powermatic 80 and Casio MTP-S120L Solar Field represent two distinct approaches to fine watchmaking — the Tissot bringing Swiss Made tradition while Casio delivers Casio (Japan) engineering.

Frequently Asked Questions

The Tissot PRX Powermatic 80 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. On price, the Casio MTP-S120L Solar Field sits a band lower ($100–$150 against $500–$1,000), 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 Tissot PRX Powermatic 80 may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The PRX Powermatic 80 at 40mm with 100m (10 ATM) water resistance handles everyday situations. The MTP-S120L Solar Field at 42mm (49 x 42 x 10.9mm) with 100m (10 ATM) is similarly capable. The PRX Powermatic 80 uses Scratch-resistant Sapphire while the MTP-S120L Solar Field uses Mineral 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.