Seiko Cal. 6364 - 720

This Automatic model from 1978 features a 34mm Titanium case. With its 18mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-3796184a4e72]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1978

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