Seiko Cal. 6340 - 641

This Automatic model from 1974 features a 34mm PVD Black case. With its 19mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-2c4a8a7291e4]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1974

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