Seiko Cal. 0778 - 854

This Spring Drive model from 1973 features a 46mm Hardlex-Coated Steel case. Powered by the 0778 caliber with 31j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-2dcdb0da0f98]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1973

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