Seiko Cal. 6311 - 680

The Seiko 6311-680 represents an important milestone in Seiko's 1985 lineup. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-35e928e11d6b]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1985

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