Seiko Cal. 6311 - 936

Released in 1972, the Cal. 6311 with design code 936 was part of Seiko's domestic market collection. With its 21mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-4c936bd86bd2]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1972

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