Seiko Cal. 5287 - 531

Released in 1985, the Cal. 5287 with design code 531 was part of Seiko's domestic market collection. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-fcfe298cb726]

Also known as: Turtle, Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1985

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