Citizen Promaster Skyhawk A-T JY8078 vs Sinn 104

Both are pilot watches in the upper tier. In short: the Sinn 104 is mechanical (automatic) for the enthusiast feel and no battery; the Citizen Promaster Skyhawk A-T JY8078 is solar / light-powered for accuracy and low maintenance. The Citizen Promaster Skyhawk A-T JY8078 is solar / light-powered, 200m water resistance, 46mm, mineral crystal; the Sinn 104 is automatic, 200m water resistance, 41mm, sapphire crystal.

Last verified 2026-06-27 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

Spec	Citizen Promaster Skyhawk A-T JY8078	Sinn 104
Movement	Solar / light-powered	Automatic
Water resistance	200m	200m
Case size	46mm	41mm
Crystal	mineral	sapphire
Style	Pilot / aviation	Pilot / aviation
Price tier	Upper	Upper

Which should you buy?

The Sinn 104 is mechanical (automatic) for the enthusiast feel and no battery; the Citizen Promaster Skyhawk A-T JY8078 is solar / light-powered for accuracy and low maintenance
The Sinn 104 has a sapphire crystal — more scratch-resistant for daily wear
The Citizen Promaster Skyhawk A-T JY8078 wears 46mm vs the Sinn 104's 41mm — choose by wrist size

Where to buy

Citizen Promaster Skyhawk A-T JY8078See price on AmazonCheck price

Sinn 104See price on AmazonCheck price

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FAQ

What's the difference between the Citizen Promaster Skyhawk A-T JY8078 and the Sinn 104?
Both are pilot watches in the upper tier. The Citizen Promaster Skyhawk A-T JY8078 is solar / light-powered, 200m water resistance, 46mm, mineral crystal; the Sinn 104 is automatic, 200m water resistance, 41mm, sapphire crystal.

Which is better value, the Citizen Promaster Skyhawk A-T JY8078 or the Sinn 104?
Both sit in the upper tier, so it comes down to movement, water resistance and case size — see the spec table above.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-27. Copy a ready-made reference:

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