Casio Pro Trek PRG601-1 vs Tissot Seastar 1000 Automatic
Casio's timepiece meets Tissot's diver
Quick Verdict
The Casio Pro Trek PRG601-1 ($250–$500) offers Tough Solar Quartz (No Battery Change) precision in the tier below the Tissot Seastar 1000 Automatic ($500–$1,000). The Pro Trek PRG601-1 measures 51.6mm and is rated 100m (10 ATM). The Seastar 1000 Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Casio Pro Trek PRG601-1 | Tissot Seastar 1000 Automatic |
|---|---|---|
| Price | $250–$500 | $500–$1,000 |
| Case Size | 51.6mm | 40mm |
| Movement | Tough Solar (Solar Quartz) | Automatic Powermatic 80 (Caliber 80.111) |
| Caliber Type | Tough Solar Quartz (No Battery Change) | ETA/Tissot Automatic |
| Power Reserve | 7 Months (Solar, Full Charge); 25 Months Power Save | 80 Hours |
| Water Resistance | 100m (10 ATM) | 300m (30 ATM) |
| Crystal | Mineral Glass | Sapphire Crystal |
| Case Material | Bio-Based Resin / Stainless Steel | Stainless Steel |
| Origin | Casio (Japan) | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Tissot's approach
The Casio Pro Trek PRG601-1 features a Bio-Based Resin / Stainless Steel case at 51.6mm with Mineral Glass protection. The Tissot Seastar 1000 Automatic offers Stainless Steel construction at 40mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Tough Solar (Solar Quartz) vs Automatic Powermatic 80 (Caliber 80.111)
The Pro Trek PRG601-1 runs the Tough Solar (Solar Quartz) (Tough Solar Quartz (No Battery Change), 7 Months (Solar, Full Charge); 25 Months Power Save power reserve) at standard frequency. The Seastar 1000 Automatic uses the Automatic Powermatic 80 (Caliber 80.111) (ETA/Tissot Automatic, 80 Hours reserve) at 21,600 vph (3 Hz). The Seastar 1000 Automatic offers a longer power reserve.
Wearability & Fit
51.6mm vs 40mm — different wrist presence
At 51.6mm, the Pro Trek PRG601-1 has a bolder wrist presence compared to the Seastar 1000 Automatic at 40mm. Water resistance differs: 100m (10 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio Pro Trek PRG601-1 sits at $250–$500 and the Tissot Seastar 1000 Automatic at $500–$1,000. On the specs that outlast any price: the Pro Trek PRG601-1 uses Mineral Glass with 7 Months (Solar, Full Charge); 25 Months Power Save, against Sapphire Crystal and 80 Hours on the Seastar 1000 Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 300m (30 ATM)
The Pro Trek PRG601-1 is rated to 100m (10 ATM) while the Seastar 1000 Automatic handles 300m (30 ATM). The Seastar 1000 Automatic offers superior water resistance.
Our Verdict
Casio
Pro Trek PRG601-1
Choose the Casio Pro Trek PRG601-1 if you prioritize Tough Solar Quartz (No Battery Change) engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At $250–$500, it delivers Tough Solar (Solar Quartz) with 7 Months (Solar, Full Charge); 25 Months Power Save power reserve.
Check Price on AmazonTissot
Seastar 1000 Automatic
Choose the Tissot Seastar 1000 Automatic if you value ETA/Tissot Automatic technology, Swiss Made heritage, and 40mm proportions. At $500–$1,000, the Automatic Powermatic 80 (Caliber 80.111) with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio Pro Trek PRG601-1 and Tissot Seastar 1000 Automatic represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Tissot delivers Swiss Made engineering.
Frequently Asked Questions
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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.