Citizen Promaster Diver BN0150 vs Seiko Prospex Monster SRPD25

Both are dive watches in the mid tier — here's how the specs differ and which to pick.

Last verified 2026-06-11 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

Spec	Citizen Promaster Diver BN0150	Seiko Prospex Monster SRPD25
Movement	Solar / light-powered	Automatic
Water resistance	200m	200m
Case size	44mm	42mm
Crystal	mineral	hardlex
Style	Dive	Dive
Price tier	Mid	Mid

Which should you buy?

• the Seiko Prospex Monster SRPD25 is mechanical (automatic) for the enthusiast feel and no battery; the Citizen Promaster Diver BN0150 is solar / light-powered for accuracy and low maintenance

Where to buy

Check the Citizen Promaster Diver BN0150 price on Amazon →

Check the Seiko Prospex Monster SRPD25 price on Amazon →

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FAQ

What's the difference between the Citizen Promaster Diver BN0150 and the Seiko Prospex Monster SRPD25?
Both are dive watches in the mid tier. The Citizen Promaster Diver BN0150 is solar / light-powered, 200m water resistance, 44mm, mineral crystal; the Seiko Prospex Monster SRPD25 is automatic, 200m water resistance, 42mm, hardlex crystal.

Which is better value, the Citizen Promaster Diver BN0150 or the Seiko Prospex Monster SRPD25?
Both sit in the mid tier, so it comes down to movement, water resistance and case size — see the spec table above.

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