Seiko Cal. 5610 - 687

The Seiko 5610-687 represents an important milestone in Seiko's 1981 lineup. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-431da351a783]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1981

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