Seiko Cal. 6311 - 581

The Seiko 6311-581 represents an important milestone in Seiko's 1977 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-e07ec438f4d5]

Also known as: UFO, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1977

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