Seiko Cal. 6311 - 764

The Seiko 6311-764 represents an important milestone in Seiko's 1970 lineup. With its 19mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-28df3447965a]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1970

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