Seiko Cal. 6174 - 639

The Seiko 6174-639 represents an important milestone in Seiko's 1973 lineup. Powered by the 6174 caliber with 34j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-a2dd874ddf4e]

Also known as: Monster, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1973

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