Head-to-Head Comparison

Updated September 5, 2026

Citizen Promaster Skyhawk A-T vs Seiko Prospex 62MAS Modern Re-interpretation

Citizen's chronograph meets Seiko's diver

Quick Verdict

The Citizen Promaster Skyhawk A-T ($500–$1,000) offers Citizen Eco-Drive U680 (Solar + Radio-Controlled) precision in the tier below the Seiko Prospex 62MAS Modern Re-interpretation ($1,000–$1,500). The Promaster Skyhawk A-T measures 45mm and is rated 200m (20 ATM). The Prospex 62MAS Modern Re-interpretation counters with Made in Japan craftsmanship and 200m (20 ATM) water resistance. Both are exceptional watches for their respective tiers.

CitizenPromaster Skyhawk A-T$500–$1,000 Check price SeikoProspex 62MAS Modern Re-interpretation$1,000–$1,500 Check price

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Citizen

Promaster Skyhawk A-T

$500–$1,000

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Seiko

Prospex 62MAS Modern Re-interpretation

$1,000–$1,500

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Specifications Compared

Feature	Citizen Promaster Skyhawk A-T	Seiko Prospex 62MAS Modern Re-interpretation
Price	$500–$1,000	$1,000–$1,500
Case Size	45mm	40.5mm
Movement	Eco-Drive (Radio-Controlled, Atomic Timekeeping)	Automatic 6R35
Caliber Type	Citizen Eco-Drive U680 (Solar + Radio-Controlled)	Seiko In-House Automatic
Power Reserve	—	70 Hours
Water Resistance	200m (20 ATM)	200m (20 ATM)
Crystal	Sapphire Crystal	Sapphire
Case Material	Stainless Steel (Black Ion-Plated)	Stainless Steel with Super-Hard Coating
Origin	Made in Japan	Made in Japan

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Citizen's design language vs Seiko's approach

The Citizen Promaster Skyhawk A-T features a Stainless Steel (Black Ion-Plated) case at 45mm with Sapphire Crystal protection. The Seiko Prospex 62MAS Modern Re-interpretation offers Stainless Steel with Super-Hard Coating construction at 40.5mm with Sapphire. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Seiko

Eco-Drive (Radio-Controlled, Atomic Timekeeping) vs Automatic 6R35

The Promaster Skyhawk A-T runs the Eco-Drive (Radio-Controlled, Atomic Timekeeping) (Citizen Eco-Drive U680 (Solar + Radio-Controlled), standard power reserve) at standard frequency. The Prospex 62MAS Modern Re-interpretation uses the Automatic 6R35 (Seiko In-House Automatic, 70 Hours reserve) at 21,600 vph (3 Hz). The Prospex 62MAS Modern Re-interpretation offers a longer power reserve.

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Wearability & Fit

Edge: Seiko

45mm vs 40.5mm — different wrist presence

At 45mm, the Promaster Skyhawk A-T has a bolder wrist presence compared to the Prospex 62MAS Modern Re-interpretation at 40.5mm. Water resistance differs: 200m (20 ATM) vs 200m (20 ATM).

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Value & Cost of Ownership

Edge: Citizen

Citizen sits in the lower tier

The Citizen Promaster Skyhawk A-T sits at $500–$1,000 and the Seiko Prospex 62MAS Modern Re-interpretation at $1,000–$1,500. On the specs that outlast any price: the Promaster Skyhawk A-T uses Sapphire Crystal with a standard reserve, against Sapphire and 70 Hours on the Prospex 62MAS Modern Re-interpretation. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Draw

200m (20 ATM) vs 200m (20 ATM)

The Promaster Skyhawk A-T is rated to 200m (20 ATM) while the Prospex 62MAS Modern Re-interpretation handles 200m (20 ATM). Both offer identical water resistance ratings.

Our Verdict

Citizen

Promaster Skyhawk A-T

Choose the Citizen Promaster Skyhawk A-T if you prioritize Citizen Eco-Drive U680 (Solar + Radio-Controlled) engineering, Made in Japan craftsmanship, and 200m (20 ATM) water resistance. At $500–$1,000, it delivers Eco-Drive (Radio-Controlled, Atomic Timekeeping) with solid power reserve.

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Seiko

Prospex 62MAS Modern Re-interpretation

Choose the Seiko Prospex 62MAS Modern Re-interpretation if you value Seiko In-House Automatic technology, Made in Japan heritage, and 40.5mm proportions. At $1,000–$1,500, the Automatic 6R35 with 70 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Citizen Promaster Skyhawk A-T and Seiko Prospex 62MAS Modern Re-interpretation represent two distinct approaches to fine watchmaking — the Citizen bringing Made in Japan tradition while Seiko delivers Made in Japan engineering.

Frequently Asked Questions

The Seiko Prospex 62MAS Modern Re-interpretation is the better buy if you want a mechanical movement; the Citizen Promaster Skyhawk A-T is the better buy if you want solar power and quartz accuracy with no servicing. On price, the Citizen Promaster Skyhawk A-T sits a band lower ($500–$1,000 against $1,000–$1,500), so it is the cheaper way into the category. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.

The Citizen Promaster Skyhawk A-T offers better upfront value, sitting a tier lower at $500–$1,000. However, the Seiko Prospex 62MAS Modern Re-interpretation may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Promaster Skyhawk A-T at 45mm with 200m (20 ATM) water resistance handles everyday situations. The Prospex 62MAS Modern Re-interpretation at 40.5mm with 200m (20 ATM) is similarly capable. The Promaster Skyhawk A-T uses Sapphire Crystal while the Prospex 62MAS Modern Re-interpretation uses Sapphire.

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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.