Seiko Cal. 4420 - 487

Released in 1974, the Cal. 4420 with design code 487 was part of Seiko's domestic market collection. Powered by the 4420 caliber with 20j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-1919e7759f46]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1974

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