Seiko Cal. 6381 - 840

The Seiko 6381-840 represents an important milestone in Seiko's 1989 lineup. With its 18mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-c165ac299b8a]

Also known as: Navigator, Emperor

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1989

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