Seiko Cal. 5687 - 313

The Seiko 5687-313 represents an important milestone in Seiko's 1985 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-d1d0189a696e]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1985

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