Seiko Cal. 6311 - 720

This Automatic model from 1973 features a 46mm Titanium case. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-532b141c1c15]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1973

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