Seiko Cal. 5645 - 730

This Automatic model from 1973 features a 36mm Two-Tone case. With its 21mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-fb45ba0475ae]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1973

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