Seiko Cal. 6178 - 360

This Spring Drive model from 1974 features a 39mm Titanium case. Powered by the 6178 caliber with 28j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-20ef3c2e5e00]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1974

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