Seiko Cal. 6647 - 216

The Seiko 6647-216 represents an important milestone in Seiko's 1980 lineup. Powered by the 6647 caliber with 34j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-d0083246a9c9]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1980

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