Seiko Cal. 5643 - 306

Released in 1974, the Cal. 5643 with design code 306 was part of Seiko's domestic market collection. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-facbbf586ffa]

Also known as: Turtle, Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1974

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