Seiko Cal. 6391 - 609

The Seiko 6391-609 represents an important milestone in Seiko's 1991 lineup. It features a Green dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-57f77ee8ecdd]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1991

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