Seiko Cal. 6638 - 464

The Seiko 6638-464 represents an important milestone in Seiko's 1973 lineup. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-88ea2d107825]

Also known as: Samurai, World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1973

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