Seiko Cal. 6311 - 961

The Seiko 6311-961 represents an important milestone in Seiko's 1983 lineup. With its 19mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-3aae9d161161]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1983

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