Seiko Cal. 6391 - 277

Released in 1979, the Cal. 6391 with design code 277 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-7a1f1dae157c]

Also known as: World Timer, Emperor

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1979

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