Seiko Cal. 6164 - 978

The Seiko 6164-978 represents an important milestone in Seiko's 1978 lineup. Powered by the 6164 caliber with 20j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-648c3354f957]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1978

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