Seiko Cal. 6381 - 778

The Seiko 6381-778 represents an important milestone in Seiko's 1967 lineup. Powered by the 6381 caliber with 21j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-fe28ec82c186]

Also known as: Rally, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1967

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