Seiko Cal. 6381 - 742

The Seiko 6381-742 represents an important milestone in Seiko's 1984 lineup. Powered by the 6381 caliber with 26j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-34b00205c89e]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1984

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