Seiko Cal. 5651 - 448

The Seiko 5651-448 represents an important milestone in Seiko's 1968 lineup. With its 18mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-5b1919e77d24]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1968

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