Seiko Cal. 6311 - 991

The Seiko 6311-991 represents an important milestone in Seiko's 1982 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-9507c32b7516]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1982

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