Seiko Cal. 0772 - 241

This Spring Drive model from 1978 features a 46mm Hardlex-Coated Steel case. Powered by the 0772 caliber with 33j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-7ee9ccf9f6c5]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1978

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