Seiko Cal. 6645 - 610

The Seiko 6645-610 represents an important milestone in Seiko's 1968 lineup. With its 21mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-08a3c4faf778]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

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