Seiko Cal. 3864 - 785

The Seiko 3864-785 represents an important milestone in Seiko's 1971 lineup. Powered by the 3864 caliber with 32j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-094b978961a8]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1971

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