Citizen Promaster Air Nighthawk vs Citizen Tsuyosa Automatic (Green Dial)
Citizen's diver meets Citizen's timepiece
Quick Verdict
The Citizen Promaster Air Nighthawk ($250–$500) and Citizen Tsuyosa Automatic (Green Dial) ($250–$500) are closely matched timepieces at similar price points. The Promaster Air Nighthawk emphasizes Eco-Drive Solar Quartz (No Battery Change) engineering while the Tsuyosa Automatic (Green Dial) focuses on Made in Japan craftsmanship.
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Specifications Compared
| Feature | Citizen Promaster Air Nighthawk | Citizen Tsuyosa Automatic (Green Dial) |
|---|---|---|
| Price | $250–$500 | $250–$500 |
| Case Size | 42mm | 40mm |
| Movement | Eco-Drive Caliber B877 | Automatic Caliber 8210 |
| Caliber Type | Eco-Drive Solar Quartz (No Battery Change) | Citizen/Miyota In-House Automatic |
| Power Reserve | 6 Months (Solar, Full Charge) | 40 Hours |
| Water Resistance | 200m (20 ATM) | 50m (5 ATM) |
| Crystal | Mineral Glass | Sapphire Crystal with Cyclops |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Citizen (Japan) | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Citizen's design language vs Citizen's approach
The Citizen Promaster Air Nighthawk features a Stainless Steel case at 42mm with Mineral Glass protection. The Citizen Tsuyosa Automatic (Green Dial) offers Stainless Steel construction at 40mm with Sapphire Crystal with Cyclops. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Eco-Drive Caliber B877 vs Automatic Caliber 8210
The Promaster Air Nighthawk runs the Eco-Drive Caliber B877 (Eco-Drive Solar Quartz (No Battery Change), 6 Months (Solar, Full Charge) power reserve) at standard frequency. The Tsuyosa Automatic (Green Dial) uses the Automatic Caliber 8210 (Citizen/Miyota In-House Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). The Tsuyosa Automatic (Green Dial) offers a longer power reserve.
Wearability & Fit
42mm vs 40mm — different wrist presence
At 42mm, the Promaster Air Nighthawk has a bolder wrist presence compared to the Tsuyosa Automatic (Green Dial) at 40mm. Water resistance differs: 200m (20 ATM) vs 50m (5 ATM).
Value & Cost of Ownership
Same tier — different value propositions
The Citizen Promaster Air Nighthawk sits at $250–$500 and the Citizen Tsuyosa Automatic (Green Dial) at $250–$500. On the specs that outlast any price: the Promaster Air Nighthawk uses Mineral Glass with 6 Months (Solar, Full Charge), against Sapphire Crystal with Cyclops and 40 Hours on the Tsuyosa Automatic (Green Dial). Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 50m (5 ATM)
The Promaster Air Nighthawk is rated to 200m (20 ATM) while the Tsuyosa Automatic (Green Dial) handles 50m (5 ATM). The Promaster Air Nighthawk is better suited for water activities.
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 $250–$500, it delivers Eco-Drive Caliber B877 with 6 Months (Solar, Full Charge) power reserve.
Check Price on AmazonCitizen
Tsuyosa Automatic (Green Dial)
Choose the Citizen Tsuyosa Automatic (Green Dial) if you value Citizen/Miyota In-House Automatic technology, Made in Japan heritage, and 40mm proportions. At $250–$500, the Automatic Caliber 8210 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Citizen Promaster Air Nighthawk and Citizen Tsuyosa Automatic (Green Dial) represent two distinct approaches to fine watchmaking — the Citizen bringing Citizen (Japan) tradition while Citizen delivers Made in Japan 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.