Seiko Cal. 6391 - 640

The Seiko 6391-640 represents an important milestone in Seiko's 1997 lineup. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-ae8071b46d11]

Also known as: Shogun, Flighty

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1997

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