Seiko Cal. 5690 - 988

This Spring Drive model from 1997 features a 38mm PVD Black case. Powered by the 5690 caliber with 26j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-3422beca3240]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1997

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