Seiko Cal. 4487 - 380

The Seiko 4487-380 represents an important milestone in Seiko's 1984 lineup. Powered by the 4487 caliber with 34j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-b115eaa74a15]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1984

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