Seiko Cal. 5661 - 566

The Seiko 5661-566 represents an important milestone in Seiko's 1968 lineup. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-04223e740ab6]

Also known as: Navigator, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1968

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