Seiko Cal. 6636 - 584

The Seiko 6636-584 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-24fcb0367a00]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1984

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