Seiko Cal. 6393 - 157

This Spring Drive model from 1979 features a 41mm Stainless Steel case. Powered by the 6393 caliber with 32j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-9a7257e2819a]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1979

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