Citizen Eco-Drive Weekender Avion Field vs Oris Aquis Date Calibre 400
Citizen's field watch meets Oris's diver
Quick Verdict
The Citizen Eco-Drive Weekender Avion Field ($250–$500) 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 Avion Field 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.
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Specifications Compared
| Feature | Citizen Eco-Drive Weekender Avion Field | Oris Aquis Date Calibre 400 |
|---|---|---|
| Price | $250–$500 | $2,500–$5,000 |
| Case Size | 43mm | 41.5mm |
| Movement | Eco-Drive Solar | 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 | Spherical Mineral Crystal | Sapphire Crystal with Anti-Reflective Coating |
| Case Material | Black Ion-Plated 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 Avion Field features a Black Ion-Plated Stainless Steel case at 43mm with Spherical 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 Solar vs Automatic Calibre 400
The Eco-Drive Weekender Avion Field runs the Eco-Drive Solar (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 Avion Field 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 Avion Field sits at $250–$500 and the Oris Aquis Date Calibre 400 at $2,500–$5,000. On the specs that outlast any price: the Eco-Drive Weekender Avion Field uses Spherical 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 Avion Field 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 Avion Field
Choose the Citizen Eco-Drive Weekender Avion Field if you prioritize Citizen Eco-Drive Solar Quartz engineering, Japanese Movement craftsmanship, and 100m (10 ATM) water resistance. At $250–$500, it delivers Eco-Drive Solar 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 Avion Field 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
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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.