Seiko Cal. 6389 - 671

This Spring Drive model from 1991 features a 43mm Hardlex-Coated Steel case. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-f903c1c6a7d8]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1991

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