Seiko Cal. 5646 - 590

Released in 1965, the Cal. 5646 with design code 590 was part of Seiko's domestic market collection. With its 18mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-af1eb11045a9]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1965

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