Seiko Cal. 0778 - 975

This Spring Drive model from 1983 features a 42mm Hardlex-Coated Steel case. Powered by the 0778 caliber with 25j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-32f80831d37a]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1983

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