Seiko Cal. 6378 - 565

The Seiko 6378-565 represents an important milestone in Seiko's 1990 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-d2b9dd72e01a]

Also known as: Helmet, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1990

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