Head-to-Head Comparison

Updated September 5, 2026

Casio MTP-S120L Solar Field vs Tissot Gentleman Powermatic 80 Silicium

Casio's field watch meets Tissot's dress watch

Quick Verdict

The Casio MTP-S120L Solar Field ($100–$150) offers Casio Tough Solar Quartz precision in the tier below the Tissot Gentleman Powermatic 80 Silicium ($500–$1,000). The MTP-S120L Solar Field measures 42mm (49 x 42 x 10.9mm) and is rated 100m (10 ATM). The Gentleman Powermatic 80 Silicium counters with Swiss Made (Swatch Group) craftsmanship and 100m (10 ATM) water resistance. Both are exceptional watches for their respective tiers.

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

Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.

Casio

MTP-S120L Solar Field

$100–$150

Check Price Full Review

Tissot

Gentleman Powermatic 80 Silicium

$500–$1,000

Check Price Full Review

Specifications Compared

Feature	Casio MTP-S120L Solar Field	Tissot Gentleman Powermatic 80 Silicium
Price	$100–$150	$500–$1,000
Case Size	42mm (49 x 42 x 10.9mm)	40mm
Movement	Solar-Powered Quartz	Powermatic 80.811 (Silicon Hairspring)
Caliber Type	Casio Tough Solar Quartz	ETA-Based Automatic with Silicon Hairspring
Power Reserve	Months on a full solar charge; no battery replacement	80 Hours
Water Resistance	100m (10 ATM)	100m (10 ATM)
Crystal	Mineral Crystal	Sapphire Crystal
Case Material	Stainless Steel	Stainless Steel
Origin	Casio (Japan)	Swiss Made (Swatch Group)

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Casio's design language vs Tissot'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 Tissot Gentleman Powermatic 80 Silicium offers Stainless Steel construction at 40mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Tissot

Solar-Powered Quartz vs Powermatic 80.811 (Silicon Hairspring)

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 Gentleman Powermatic 80 Silicium uses the Powermatic 80.811 (Silicon Hairspring) (ETA-Based Automatic with Silicon Hairspring, 80 Hours reserve) at 21,600 vph (3 Hz). The Gentleman Powermatic 80 Silicium offers a longer power reserve.

📏

Wearability & Fit

Edge: Tissot

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

At 42mm (49 x 42 x 10.9mm), the MTP-S120L Solar Field has a bolder wrist presence compared to the Gentleman Powermatic 80 Silicium at 40mm. Water resistance differs: 100m (10 ATM) vs 100m (10 ATM).

💰

Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Casio MTP-S120L Solar Field sits at $100–$150 and the Tissot Gentleman Powermatic 80 Silicium at $500–$1,000. 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 80 Hours on the Gentleman Powermatic 80 Silicium. Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Draw

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

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

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.

Check Price on Amazon

Tissot

Gentleman Powermatic 80 Silicium

Choose the Tissot Gentleman Powermatic 80 Silicium if you value ETA-Based Automatic with Silicon Hairspring technology, Swiss Made (Swatch Group) heritage, and 40mm proportions. At $500–$1,000, the Powermatic 80.811 (Silicon Hairspring) with 80 Hours power reserve makes it a compelling choice.

Check Price on Amazon

Try Prime Free — Free Shipping on Both Watches Students & 18–24: start Prime for Young Adults free

The Bottom Line

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

Frequently Asked Questions

The Tissot Gentleman Powermatic 80 Silicium 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 Gentleman Powermatic 80 Silicium 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 Gentleman Powermatic 80 Silicium at 40mm with 100m (10 ATM) is similarly capable. The MTP-S120L Solar Field uses Mineral Crystal while the Gentleman Powermatic 80 Silicium uses Sapphire Crystal. Sapphire resists scratches noticeably better than mineral glass.

More Comparisons

Mido Multifort vs Tissot Gentleman

Two 40mm Swiss automatics, one of them certified

Tag Heuer Carrera Chronograph vs Casio MTP-S120L Solar Field

Tag Heuer's chronograph meets Casio's field watch

Tag Heuer Carrera Chronograph vs Tissot Gentleman Powermatic 80 Silicium

Tag Heuer's chronograph meets Tissot's dress watch

Explore These Watches

Casio MTP-S120L Solar Field — Full Review Tissot Gentleman Powermatic 80 Silicium — Full Review Browse All Guides

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.