Seiko Cal. 0773 - 991

This Spring Drive model from 1966 features a 39mm Hardlex-Coated Steel case. Powered by the 0773 caliber with 24j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-e0395b58d210]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1966

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