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Seiko Prospex Sea Monster Automatic Diver's 200M SRP581K1


Seiko Prospex Sea Monster Automatic Diver's 200M SRP581K1. 

This is the 2nd Monster  in the new Prospex series, its blue, coated bezel and black, coated case matching the professional grade. This comes from Seiko's line of fully in-house built offerings with tougher, automatic movements, built to take more abuse than its wearer. The 4R36 movement inside has been given the sturdiness of the 7S26 and the rest – as they say, is history.


Ion Plated Stainless Steel Case
Rubber Band
Automatic Movement
Caliber: 4R36
Hardlex Glass with Anti-Reflective Coating
Black Dial with Lumibrite Markers
Day and Date Display
Screw Case Back
Screw-Down Crown
Buckle Clasp
200M Water Resistance

Approximate Case Diameter: 42mm
Approximate Case Thickness: 12.4mm