Seiko Cal. 6668 - 590

The Seiko 6668-590 represents an important milestone in Seiko's 1970 lineup. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-249bb3112043]

Also known as: Crown, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1970

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