Seiko Cal. 6178 - 639

This Automatic model from 1977 features a 39mm Titanium case. Powered by the 6178 caliber with 24j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-fbb1b69c0921]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1977

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