Seiko Cal. 6678 - 616

The Seiko 6678-616 represents an important milestone in Seiko's 1966 lineup. Powered by the 6678 caliber with 21j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-ee85443d73f8]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1966

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