Seiko Cal. 5658 - 999

This Spring Drive model from 1978 features a 43mm Stainless Steel case. Powered by the 5658 caliber with 20j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-babd22fcc9e9]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1978

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