Seiko Cal. 3887 - 913

The Seiko 3887-913 represents an important milestone in Seiko's 1984 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-4a0ae77ba141]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1984

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