Seiko Cal. 4487 - 645

The Seiko 4487-645 represents an important milestone in Seiko's 1996 lineup. Powered by the 4487 caliber with 30j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-f53116ef6b37]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1996

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