Seiko Cal. 6391 - 404

This Hand-Winding model from 1978 features a 35mm Two-Tone case. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-bf807ebba18f]

Also known as: Turtle, Shogun

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1978

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