Seiko Cal. 6378 - 427

The Seiko 6378-427 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-daa8f1417137]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1987

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