Seiko Cal. 6651 - 616

The Seiko 6651-616 represents an important milestone in Seiko's 1971 lineup. With its 19mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-f8da3ae0462a]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1971

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