Seiko Cal. 4487 - 863

The 4487-863 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4487 caliber with 19j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-571608adb68b]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1987

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