Prospex Butterfly Fish SRPD15K1

“Butterfly Fish”

Seiko Prospex SRPD15K1, a regional limited-edition Butterfly Fish / Baby Tuna-style 200 m diver with Seiko 4R36 automatic movement. Exact product evidence is retailer and collector-backed; official Seiko sources corroborate Prospex collection context and 4R36 specifications.

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