Head-to-Head Comparison

Updated September 5, 2026

Tissot PRX Powermatic 80 vs Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet)

Two timepieces compared — $500–$1,000 vs $10,000–$25,000

Quick Verdict

The Tissot PRX Powermatic 80 ($500–$1,000) offers In-House Automatic (ETA C07.111 base) precision in the tier below the Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) ($10,000–$25,000). The PRX Powermatic 80 measures 40mm and is rated 100m (10 ATM). The Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) counters with Swiss Made craftsmanship and 30m (3 ATM) water resistance. Both are exceptional timepieces for their respective tiers.

TissotPRX Powermatic 80$500–$1,000 Check price Girard-PerregauxVintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet)$10,000–$25,000 Check price

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

Tissot

PRX Powermatic 80

$500–$1,000

Check Price Full Review

Girard-Perregaux

Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet)

$10,000–$25,000

Check Price Full Review

Specifications Compared

Feature	Tissot PRX Powermatic 80	Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet)
Price	$500–$1,000	$10,000–$25,000
Case Size	40mm	About 36.1 x 35.25mm, curved rectangle
Movement	Automatic Powermatic 80.111	Automatic, Girard-Perregaux calibre GP03300-0105, openworked
Caliber Type	In-House Automatic (ETA C07.111 base)	GP03300, automatic
Power Reserve	80 Hours	About 46 hours
Water Resistance	100m (10 ATM)	30m (3 ATM)
Crystal	Scratch-resistant Sapphire	Sapphire Crystal, curved
Case Material	316L Stainless Steel	Stainless steel, sapphire caseback
Origin	Swiss Made	Swiss Made

Category-by-Category Analysis

🎨

Design & Aesthetics

Edge: Draw

Tissot's design language vs Girard-Perregaux's approach

The Tissot PRX Powermatic 80 features a 316L Stainless Steel case at 40mm with Scratch-resistant Sapphire protection. The Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) offers Stainless steel, sapphire caseback construction at About 36.1 x 35.25mm, curved rectangle with Sapphire Crystal, curved. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Tissot

Automatic Powermatic 80.111 vs Automatic, Girard-Perregaux calibre GP03300-0105, openworked

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 Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) uses the Automatic, Girard-Perregaux calibre GP03300-0105, openworked (GP03300, automatic, About 46 hours reserve) at standard. The PRX Powermatic 80 edges ahead on power reserve.

📏

Wearability & Fit

Edge: Girard-Perregaux

40mm vs About 36.1 x 35.25mm, curved rectangle — different wrist presence

At 40mm, the PRX Powermatic 80 has a bolder wrist presence compared to the Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) at About 36.1 x 35.25mm, curved rectangle. Water resistance differs: 100m (10 ATM) vs 30m (3 ATM).

💰

Value & Cost of Ownership

Edge: Tissot

Tissot sits in the lower tier

The Tissot PRX Powermatic 80 sits at $500–$1,000 and the Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) at $10,000–$25,000. On the specs that outlast any price: the PRX Powermatic 80 uses Scratch-resistant Sapphire with 80 Hours, against Sapphire Crystal, curved and About 46 hours on the Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet). Service intervals are typically 5-7 years for both.

💧

Water Resistance

Edge: Tissot

100m (10 ATM) vs 30m (3 ATM)

The PRX Powermatic 80 is rated to 100m (10 ATM) while the Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) handles 30m (3 ATM). The PRX Powermatic 80 is better suited for water activities.

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.

Check Price on Amazon

Girard-Perregaux

Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet)

Choose the Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) if you value GP03300, automatic technology, Swiss Made heritage, and About 36.1 x 35.25mm, curved rectangle proportions. At $10,000–$25,000, the Automatic, Girard-Perregaux calibre GP03300-0105, openworked with About 46 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 Tissot PRX Powermatic 80 and Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) represent two distinct approaches to the timepiece category — the Tissot bringing Swiss Made tradition while Girard-Perregaux delivers Swiss Made engineering.

Frequently Asked Questions

For water, the Tissot PRX Powermatic 80 is rated 100 m against 30 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Tissot PRX Powermatic 80 sits a band lower ($500–$1,000 against $10,000–$25,000), 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 Tissot PRX Powermatic 80 offers better upfront value, sitting a tier lower at $500–$1,000. However, the Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) 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 Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) at About 36.1 x 35.25mm, curved rectangle with 30m (3 ATM) is similarly capable. The PRX Powermatic 80 uses Scratch-resistant Sapphire while the Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) uses Sapphire Crystal, curved.

More Comparisons

Tissot PRX vs Hamilton Khaki Field

Integrated bracelet sophistication meets military heritage

Tag Heuer Carrera Chronograph vs Tissot PRX Powermatic 80

Tag Heuer's chronograph meets Tissot's timepiece

Tag Heuer Carrera Chronograph vs Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet)

Tag Heuer's chronograph meets Girard-Perregaux's timepiece

Explore These Watches

Tissot PRX Powermatic 80 — Full Review Girard-Perregaux Vintage 1945 XXL Large Date Moon Phases skeleton 25882-11-421 (steel, blue openworked dial, bracelet) — 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.