Seiko Cal. 6328 - 120

This Spring Drive model from 1969 features a 36mm Two-Tone case. Powered by the 6328 caliber with 23j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-95809bcc7aa6]

Also known as: Sumo, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1969

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