Seiko Cal. 0731 - 848

This Hand-Winding model from 1966 features a 36mm Two-Tone case. With its 22mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-52fb524032a4]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1966

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