Seiko Cal. 6389 - 164

This Spring Drive model from 1979 features a 43mm Two-Tone case. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ec66a81874ee]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1979

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