Seiko Cal. 4487 - 387

Released in 1998, the Cal. 4487 with design code 387 was part of Seiko's domestic market collection. Powered by the 4487 caliber with 33j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-7857176b920f]

Also known as: Sumo, Rally

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1998

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