Seiko Cal. 6381 - 733

This Spring Drive model from 1997 features a 38mm PVD Black case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-34a381a7679c]

Also known as: UFO, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1997

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