Seiko Cal. 6157 - 997

This Automatic model from 1978 features a 41mm Titanium case. Powered by the 6157 caliber with 19j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-a31853dbf7f9]

Also known as: Helmet, Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1978

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