Seiko Cal. 4478 - 789

Seiko 4478-789

This Spring Drive model from 1974 features a 40mm Stainless Steel case. Powered by the 4478 caliber with 28j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-ca7fada5ce6c]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
15.8mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Silver
Jewels
28j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1974

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