Seiko Cal. 6393 - 911

This Automatic model from 1967 features a 41mm Titanium case. Powered by the 6393 caliber with 21j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-b1a1022ada1a]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1967

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