Citizen Eco-Drive Weekender Chronograph vs Oris Aquis Date Calibre 400
Citizen's chronograph meets Oris's diver
Quick Verdict
The Citizen Eco-Drive Weekender Chronograph ($150–$250) offers Citizen Eco-Drive Solar Quartz precision in the tier below the Oris Aquis Date Calibre 400 ($2,500–$5,000). The Eco-Drive Weekender Chronograph measures 43mm and is rated 100m (10 ATM). The Aquis Date Calibre 400 counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional watches for their respective tiers.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Citizen Eco-Drive Weekender Chronograph | Oris Aquis Date Calibre 400 |
|---|---|---|
| Price | $150–$250 | $2,500–$5,000 |
| Case Size | 43mm | 41.5mm |
| Movement | Eco-Drive Caliber H500 | Automatic Calibre 400 |
| Caliber Type | Citizen Eco-Drive Solar Quartz | Oris In-House Manufacture |
| Power Reserve | — | 120 Hours (5 Days) |
| Water Resistance | 100m (10 ATM) | 300m (30 ATM) |
| Crystal | Mineral Crystal | Sapphire Crystal with Anti-Reflective Coating |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Japanese Movement | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Citizen's design language vs Oris's approach
The Citizen Eco-Drive Weekender Chronograph features a Stainless Steel case at 43mm with Mineral Crystal protection. The Oris Aquis Date Calibre 400 offers Stainless Steel construction at 41.5mm with Sapphire Crystal with Anti-Reflective Coating. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Eco-Drive Caliber H500 vs Automatic Calibre 400
The Eco-Drive Weekender Chronograph runs the Eco-Drive Caliber H500 (Citizen Eco-Drive Solar Quartz, standard power reserve) at standard frequency. The Aquis Date Calibre 400 uses the Automatic Calibre 400 (Oris In-House Manufacture, 120 Hours (5 Days) reserve) at 28,800 vph (4 Hz). The Aquis Date Calibre 400 offers a longer power reserve.
Wearability & Fit
43mm vs 41.5mm — different wrist presence
At 43mm, the Eco-Drive Weekender Chronograph has a bolder wrist presence compared to the Aquis Date Calibre 400 at 41.5mm. Water resistance differs: 100m (10 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Citizen sits in the lower tier
The Citizen Eco-Drive Weekender Chronograph sits at $150–$250 and the Oris Aquis Date Calibre 400 at $2,500–$5,000. On the specs that outlast any price: the Eco-Drive Weekender Chronograph uses Mineral Crystal with a standard reserve, against Sapphire Crystal with Anti-Reflective Coating and 120 Hours (5 Days) on the Aquis Date Calibre 400. Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 300m (30 ATM)
The Eco-Drive Weekender Chronograph is rated to 100m (10 ATM) while the Aquis Date Calibre 400 handles 300m (30 ATM). The Aquis Date Calibre 400 offers superior water resistance.
Our Verdict
Citizen
Eco-Drive Weekender Chronograph
Choose the Citizen Eco-Drive Weekender Chronograph if you prioritize Citizen Eco-Drive Solar Quartz engineering, Japanese Movement craftsmanship, and 100m (10 ATM) water resistance. At $150–$250, it delivers Eco-Drive Caliber H500 with solid power reserve.
Check Price on AmazonOris
Aquis Date Calibre 400
Choose the Oris Aquis Date Calibre 400 if you value Oris In-House Manufacture technology, Swiss Made heritage, and 41.5mm proportions. At $2,500–$5,000, the Automatic Calibre 400 with 120 Hours (5 Days) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Citizen Eco-Drive Weekender Chronograph and Oris Aquis Date Calibre 400 represent two distinct approaches to fine watchmaking — the Citizen bringing Japanese Movement tradition while Oris delivers Swiss Made engineering.
Frequently Asked Questions
More Comparisons
Oris Aquis vs Seiko SPB143 (62MAS)
Swiss independence meets Japanese precision diving
Tag Heuer Carrera Chronograph vs Citizen Eco-Drive Weekender Chronograph
Two chronographs compared — $2,500–$5,000 vs $150–$250
Tag Heuer Carrera Chronograph vs Oris Aquis Date Calibre 400
Tag Heuer's chronograph meets Oris's diver
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.