Seiko Cal. 6381 - 668

The Seiko 6381-668 represents an important milestone in Seiko's 1997 lineup. Powered by the 6381 caliber with 28j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-9c62525229a6]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1997

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