Seiko Cal. 5663 - 731

The Seiko 5663-731 represents an important milestone in Seiko's 1998 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ff4c77e415fc]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1998

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