Seiko Cal. 6636 - 978

Released in 1985, the Cal. 6636 with design code 978 was part of Seiko's domestic market collection. It features a Silver dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-37110dcd8e94]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1985

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