Seiko Cal. 6661 - 221

The Seiko 6661-221 represents an important milestone in Seiko's 1966 lineup. With its 22mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-5f574ddbfa9d]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1966

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