Seiko Cal. 6641 - 526

The Seiko 6641-526 represents an important milestone in Seiko's 1978 lineup. With its 21mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-05691b127f57]

Also known as: World Timer, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1978

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