Seiko Cal. 4420 - 964

The 4420-964 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-d8e38916a5ec]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1980

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