Seiko Cal. 4487 - 650

The Seiko 4487-650 represents an important milestone in Seiko's 1972 lineup. Powered by the 4487 caliber with 26j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-e0a255a43e46]

Also known as: Monster, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1972

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