Seiko Cal. 4487 - 120

Released in 1991, the Cal. 4487 with design code 120 was part of Seiko's domestic market collection. Powered by the 4487 caliber with 31j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-01739628626e]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1991

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