Seiko Cal. 4528 - 349

Seiko 4528-349

This Spring Drive model from 1965 features a 41mm Stainless Steel case. Powered by the 4528 caliber with 17j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-e704f67aaaa0]

Also known as: Monster, Helmet

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
11.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
60m
Dial Color
Silver
Jewels
17j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1965

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