Seiko Cal. 7178 - 678

The Seiko 7178-678 represents an important milestone in Seiko's 1968 lineup. Powered by the 7178 caliber with 22j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-aef06531cdb6]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1968

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