Seiko Cal. 5285 - 987

The Seiko 5285-987 represents an important milestone in Seiko's 1978 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-7cb0fae1f626]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1978

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