Seiko Cal. 5643 - 654

The Seiko 5643-654 represents an important milestone in Seiko's 1971 lineup. With its 20mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-50ae835a1ef3]

Also known as: Samurai, Navigator

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1971

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