Seiko Cal. 6390 - 650

This Automatic model from 1970 features a 45mm Hardlex-Coated Steel case. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-ebe9cdf0bc9f]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1970

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