Seiko Cal. 6391 - 803

The Seiko 6391-803 represents an important milestone in Seiko's 1992 lineup. Powered by the 6391 caliber with 22j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-173d80adf7e6]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1992

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