Seiko Cal. 6643 - 270

The Seiko 6643-270 represents an important milestone in Seiko's 1978 lineup. With its 21mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-a4f7c9ee0fd7]

Also known as: Silverwave

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

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