Updated
Casio Pro Trek PRG340-1 vs Citizen Eco-Drive Weekender Garrison
Casio's timepiece meets Citizen's field watch
Quick Verdict
The Citizen Eco-Drive Weekender Garrison ($100–$150) delivers Eco-Drive Solar Quartz (No Battery Change) technology in the tier below the Casio Pro Trek PRG340-1 ($150–$250). The Eco-Drive Weekender Garrison measures 37mm and is rated 100m (10 ATM). The Pro Trek PRG340-1 justifies its premium with Casio (Japan) heritage and Tough Solar (Solar Quartz). Both represent excellent choices in the luxury watch category.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Casio Pro Trek PRG340-1 | Citizen Eco-Drive Weekender Garrison |
|---|---|---|
| Price | $150–$250 | $100–$150 |
| Case Size | 54.7 × 51.7 × 15.1mm | 37mm |
| Movement | Tough Solar (Solar Quartz) | Eco-Drive Caliber E101 |
| Caliber Type | Tough Solar Quartz (No Battery Change) | Eco-Drive Solar Quartz (No Battery Change) |
| Power Reserve | Tough Solar (Rechargeable) | 6 Months (Solar, Full Charge) |
| Water Resistance | 100m (10 ATM) | 100m (10 ATM) |
| Crystal | Mineral Glass | Mineral Glass |
| Case Material | Bio-Based Resin | Stainless Steel |
| Origin | Casio (Japan) | Citizen (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Citizen's approach
The Casio Pro Trek PRG340-1 features a Bio-Based Resin case at 54.7 × 51.7 × 15.1mm with Mineral Glass protection. The Citizen Eco-Drive Weekender Garrison offers Stainless Steel construction at 37mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Tough Solar (Solar Quartz) vs Eco-Drive Caliber E101
The Pro Trek PRG340-1 runs the Tough Solar (Solar Quartz) (Tough Solar Quartz (No Battery Change), Tough Solar (Rechargeable) power reserve) at standard frequency. The Eco-Drive Weekender Garrison uses the Eco-Drive Caliber E101 (Eco-Drive Solar Quartz (No Battery Change), 6 Months (Solar, Full Charge) reserve) at standard. The Eco-Drive Weekender Garrison offers a longer power reserve.
Wearability & Fit
54.7 × 51.7 × 15.1mm vs 37mm — different wrist presence
At 54.7 × 51.7 × 15.1mm, the Pro Trek PRG340-1 has a bolder wrist presence compared to the Eco-Drive Weekender Garrison at 37mm. Water resistance differs: 100m (10 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Citizen sits in the lower tier
The Casio Pro Trek PRG340-1 sits at $150–$250 and the Citizen Eco-Drive Weekender Garrison at $100–$150. On the specs that outlast any price: the Pro Trek PRG340-1 uses Mineral Glass with Tough Solar (Rechargeable), against Mineral Glass and 6 Months (Solar, Full Charge) on the Eco-Drive Weekender Garrison. Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 100m (10 ATM)
The Pro Trek PRG340-1 is rated to 100m (10 ATM) while the Eco-Drive Weekender Garrison handles 100m (10 ATM). Both offer identical water resistance ratings.
Our Verdict
Casio
Pro Trek PRG340-1
Choose the Casio Pro Trek PRG340-1 if you prioritize Tough Solar Quartz (No Battery Change) engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At $150–$250, it delivers Tough Solar (Solar Quartz) with Tough Solar (Rechargeable) power reserve.
Check Price on AmazonCitizen
Eco-Drive Weekender Garrison
Choose the Citizen Eco-Drive Weekender Garrison if you value Eco-Drive Solar Quartz (No Battery Change) technology, Citizen (Japan) heritage, and 37mm proportions. At $100–$150, the Eco-Drive Caliber E101 with 6 Months (Solar, Full Charge) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio Pro Trek PRG340-1 and Citizen Eco-Drive Weekender Garrison represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Citizen delivers Citizen (Japan) engineering.
Frequently Asked Questions
More Comparisons
Citizen Garrison vs Timex Expedition Scout
The two default cheap field watches
Tag Heuer Carrera Chronograph vs Casio Pro Trek PRG340-1
Tag Heuer's chronograph meets Casio's timepiece
Tag Heuer Carrera Chronograph vs Citizen Eco-Drive Weekender Garrison
Tag Heuer's chronograph meets Citizen's field watch
Explore These Watches
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.