Seiko Cal. 5611 - 987

The Seiko 5611-987 represents an important milestone in Seiko's 1989 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a5afa04c2f3c]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1989

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