Seiko Cal. 6389 - 531

The Seiko 6389-531 represents an important milestone in Seiko's 1971 lineup. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-0313b21a1608]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1971

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