Citizen Tsuyosa Automatic vs Citizen Promaster Sky CB0248
Citizen's timepiece meets Citizen's pilot watch
Quick Verdict
The Citizen Tsuyosa Automatic ($250–$500) and Citizen Promaster Sky CB0248 ($250–$500) are closely matched timepieces at similar price points. The Tsuyosa Automatic emphasizes Citizen/Miyota In-House Automatic engineering while the Promaster Sky CB0248 focuses on Citizen (Japan) craftsmanship.
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Specifications Compared
| Feature | Citizen Tsuyosa Automatic | Citizen Promaster Sky CB0248 |
|---|---|---|
| Price | $250–$500 | $250–$500 |
| Case Size | 40mm | 42.4mm |
| Movement | Automatic Caliber 8210 | Eco-Drive Radio-Controlled |
| Caliber Type | Citizen/Miyota In-House Automatic | Citizen Eco-Drive |
| Power Reserve | 40 Hours | — |
| Water Resistance | 50m (5 ATM) | — |
| Crystal | Sapphire Crystal with Cyclops | — |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Citizen (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Citizen's design language vs Citizen's approach
The Citizen Tsuyosa Automatic features a Stainless Steel case at 40mm with Sapphire Crystal with Cyclops protection. The Citizen Promaster Sky CB0248 offers Stainless Steel construction at 42.4mm with crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber 8210 vs Eco-Drive Radio-Controlled
The Tsuyosa Automatic runs the Automatic Caliber 8210 (Citizen/Miyota In-House Automatic, 40 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Promaster Sky CB0248 uses the Eco-Drive Radio-Controlled (Citizen Eco-Drive, standard reserve) at standard. The Tsuyosa Automatic edges ahead on power reserve.
Wearability & Fit
40mm vs 42.4mm — different wrist presence
At 40mm, the Tsuyosa Automatic wears more compactly on smaller wrists compared to the Promaster Sky CB0248 at 42.4mm. Water resistance differs: 50m (5 ATM) vs 50m.
Value & Cost of Ownership
Same tier — different value propositions
The Citizen Tsuyosa Automatic sits at $250–$500 and the Citizen Promaster Sky CB0248 at $250–$500. On the specs that outlast any price: the Tsuyosa Automatic uses Sapphire Crystal with Cyclops with 40 Hours, against a hardened crystal and a standard reserve on the Promaster Sky CB0248. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 50m
The Tsuyosa Automatic is rated to 50m (5 ATM) while the Promaster Sky CB0248 handles 50m. The Tsuyosa Automatic is better suited for water activities.
Our Verdict
Citizen
Tsuyosa Automatic
Choose the Citizen Tsuyosa Automatic if you prioritize Citizen/Miyota In-House Automatic engineering, Made in Japan craftsmanship, and 50m (5 ATM) water resistance. At $250–$500, it delivers Automatic Caliber 8210 with 40 Hours power reserve.
Check Price on AmazonCitizen
Promaster Sky CB0248
Choose the Citizen Promaster Sky CB0248 if you value Citizen Eco-Drive technology, Citizen (Japan) heritage, and 42.4mm proportions. At $250–$500, the Eco-Drive Radio-Controlled with ample power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Citizen Tsuyosa Automatic and Citizen Promaster Sky CB0248 represent two distinct approaches to fine watchmaking — the Citizen bringing Made in Japan tradition while Citizen delivers Citizen (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.