Seiko Cal. 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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