Seiko Cal. 6398 - 311

This Hand-Winding model from 1983 features a 35mm Titanium case. Powered by the 6398 caliber with 33j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-057e99fcf8e2]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1983

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