Seiko Cal. 7158 - 926

This Hand-Winding model from 1970 features a 40mm Two-Tone case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-270e7da18bf3]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1970

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