Seiko Cal. 4487 - 613

The Seiko 4487-613 represents an important milestone in Seiko's 1989 lineup. Powered by the 4487 caliber with 20j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-7a06368689d4]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1989

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