Seiko Cal. 5610 - 635

The Seiko 5610-635 represents an important milestone in Seiko's 1979 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-db9c93f27c01]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1979

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