Seiko Cal. 7178 - 642

The Seiko 7178-642 represents an important milestone in Seiko's 1974 lineup. Powered by the 7178 caliber with 23j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-801c16590a7d]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1974

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