Seiko Cal. 6381 - 408

The Seiko 6381-408 represents an important milestone in Seiko's 1976 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-0b82683faca4]

Also known as: Helmet, UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1976

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