Seiko Cal. 4493 - 642

The Seiko 4493-642 represents an important milestone in Seiko's 1979 lineup. Powered by the 4493 caliber with 33j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-723b4a7e6405]

Also known as: Rally, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

White

Jewels

33j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1979

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