Seiko Cal. 5688 - 173

The Seiko 5688-173 represents an important milestone in Seiko's 1978 lineup. Powered by the 5688 caliber with 36j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-bda18ff3b823]

Also known as: Helmet, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1978

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