Seiko Cal. 6391 - 504

The Seiko 6391-504 represents an important milestone in Seiko's 1966 lineup. It features a Navy dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-ddd956667b88]

Also known as: Bullhead, Silverwave

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1966

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