Seiko Cal. 6643 - 663

This Solar model from 1968 features a 41mm Two-Tone case. With its 18mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-2bb995b56aa8]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1968

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