Seiko Cal. 5640 - 269

This Solar model from 1971 features a 40mm PVD Black case. With its 21mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-3de7506c71ea]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1971

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