Seiko Cal. 6313 - 927

The Seiko 6313-927 represents an important milestone in Seiko's 1978 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-a2ef03deb7d2]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1978

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