Seiko Cal. 4561 - 898

Seiko 4561-898

This Spring Drive model from 1973 features a 37mm PVD Black case. Powered by the 4561 caliber with 25j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-d4121213164e]

Also known as: Monster, Helmet

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
37mm
Case Thickness
13.9mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
50m
Dial Color
Green
Jewels
25j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1973

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seikata-wm-d4121213164e