Citizen Promaster Sea Eco-Drive Diver vs Invicta Pro Diver Automatic 23681
Two divers compared — $250–$500 vs $50–$100
Quick Verdict
The Invicta Pro Diver Automatic 23681 ($50–$100) delivers Automatic (Seiko NH35A) technology in the tier below the Citizen Promaster Sea Eco-Drive Diver ($250–$500). The Pro Diver Automatic 23681 measures 40mm and is rated 200m. The Promaster Sea Eco-Drive Diver justifies its premium with Made in Japan heritage and Eco-Drive Caliber E168. Both represent excellent choices in the diver category.
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Specifications Compared
| Feature | Citizen Promaster Sea Eco-Drive Diver | Invicta Pro Diver Automatic 23681 |
|---|---|---|
| Price | $250–$500 | $50–$100 |
| Case Size | 44mm | 40mm |
| Movement | Eco-Drive Caliber E168 | Automatic NH35A |
| Caliber Type | Citizen Eco-Drive (Solar Quartz) | Automatic (Seiko NH35A) |
| Power Reserve | — | — |
| Water Resistance | 200m (20 ATM) ISO 6425 | 200m |
| Crystal | Mineral Crystal | Mineral Glass |
| Case Material | Stainless Steel | — |
| Origin | Made in Japan | Invicta (Japanese movement) |
Category-by-Category Analysis
Design & Aesthetics
Citizen's design language vs Invicta's approach
The Citizen Promaster Sea Eco-Drive Diver features a Stainless Steel case at 44mm with Mineral Crystal protection. The Invicta Pro Diver Automatic 23681 offers steel construction at 40mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Eco-Drive Caliber E168 vs Automatic NH35A
The Promaster Sea Eco-Drive Diver runs the Eco-Drive Caliber E168 (Citizen Eco-Drive (Solar Quartz), standard power reserve) at standard frequency. The Pro Diver Automatic 23681 uses the Automatic NH35A (Automatic (Seiko NH35A), standard reserve) at standard. Power reserves are closely matched.
Wearability & Fit
44mm vs 40mm — different wrist presence
At 44mm, the Promaster Sea Eco-Drive Diver has a bolder wrist presence compared to the Pro Diver Automatic 23681 at 40mm. Water resistance differs: 200m (20 ATM) ISO 6425 vs 200m.
Value & Cost of Ownership
Invicta sits in the lower tier
The Citizen Promaster Sea Eco-Drive Diver sits at $250–$500 and the Invicta Pro Diver Automatic 23681 at $50–$100. On the specs that outlast any price: the Promaster Sea Eco-Drive Diver uses Mineral Crystal with a standard reserve, against Mineral Glass and a standard reserve on the Pro Diver Automatic 23681. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) ISO 6425 vs 200m
The Promaster Sea Eco-Drive Diver is rated to 200m (20 ATM) ISO 6425 while the Pro Diver Automatic 23681 handles 200m. Both offer identical water resistance ratings.
Our Verdict
Citizen
Promaster Sea Eco-Drive Diver
Choose the Citizen Promaster Sea Eco-Drive Diver if you prioritize Citizen Eco-Drive (Solar Quartz) engineering, Made in Japan craftsmanship, and 200m (20 ATM) ISO 6425 water resistance. At $250–$500, it delivers Eco-Drive Caliber E168 with solid power reserve.
Check Price on AmazonInvicta
Pro Diver Automatic 23681
Choose the Invicta Pro Diver Automatic 23681 if you value Automatic (Seiko NH35A) technology, Invicta (Japanese movement) heritage, and 40mm proportions. At $50–$100, the Automatic NH35A with ample power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Citizen Promaster Sea Eco-Drive Diver and Invicta Pro Diver Automatic 23681 represent two distinct approaches to the diver category — the Citizen bringing Made in Japan tradition while Invicta delivers Invicta (Japanese movement) 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.