Seiko Cal. 6389 - 300

The Seiko 6389-300 represents an important milestone in Seiko's 1968 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-26cf076b9a62]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1968

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