Seiko Cal. 4427 - 569

Seiko 4427-569

This Spring Drive model from 1977 features a 36mm Stainless Steel case. Powered by the 4427 caliber with 18j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-db526ef01caa]

Also known as: Tuna, Silverwave

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
9.2mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Cream
Jewels
18j
Frequency
28,800 bph
Power Reserve
48 hours
Year
1977

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