Citizen Promaster Air Nighthawk vs Seiko Prospex "Turtle"
Two divers compared — ~$349 vs ~$500
Quick Verdict
The Citizen Promaster Air Nighthawk (~$349) offers Eco-Drive Solar Quartz (No Battery Change) precision at $151 less than the Seiko Prospex "Turtle" (~$500). The Prospex "Turtle" counters with Made in Japan craftsmanship and 200m (20 ATM) Diver water resistance. Both are exceptional divers for their respective price points.
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Specifications Compared
| Feature | Citizen Promaster Air Nighthawk | Seiko Prospex "Turtle" |
|---|---|---|
| Price | ~$349 | ~$500 |
| Case Size | 42mm | 45mm |
| Movement | Eco-Drive Caliber B877 | Automatic Caliber 4R36 |
| Caliber Type | Eco-Drive Solar Quartz (No Battery Change) | In-House Automatic Manufacture |
| Power Reserve | 6 Months (Solar, Full Charge) | 41 Hours |
| Water Resistance | 200m (20 ATM) | 200m (20 ATM) Diver |
| Crystal | Mineral Glass | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Citizen (Japan) | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Citizen's design language vs Seiko's approach
Movement & Performance
Eco-Drive Caliber B877 vs Automatic Caliber 4R36
Wearability & Fit
42mm vs 45mm — different wrist presence
Value & Cost of Ownership
Citizen is $151 more affordable
Water Resistance
200m (20 ATM) vs 200m (20 ATM) Diver
Our Verdict
Citizen
Promaster Air Nighthawk
Choose the Citizen Promaster Air Nighthawk if you prioritize Eco-Drive Solar Quartz (No Battery Change) engineering, Citizen (Japan) craftsmanship, and 200m (20 ATM) water resistance. At ~$349, it delivers Eco-Drive Caliber B877 with 6 Months (Solar, Full Charge) power reserve.
Check Price on AmazonSeiko
Prospex "Turtle"
Choose the Seiko Prospex "Turtle" if you value In-House Automatic Manufacture technology, Made in Japan heritage, and 45mm proportions. At ~$500, the Automatic Caliber 4R36 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Citizen Promaster Air Nighthawk and Seiko Prospex "Turtle" represent two distinct approaches to the diver category — the Citizen bringing Citizen (Japan) tradition while Seiko delivers Made in Japan engineering.