Seiko Cal. 6643 - 917

The Seiko 6643-917 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-81283ba11766]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1978

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