Seiko Cal. 5657 - 794

This Automatic model from 1966 features a 45mm PVD Black case. With its 20mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-49fbbaa0fe70]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1966

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