Seiko Cal. 6391 - 186

The Seiko 6391-186 represents an important milestone in Seiko's 1988 lineup. It features a Black dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-7f3b567f314a]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1988

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