Seiko Cal. 4487 - 244

The Seiko 4487-244 represents an important milestone in Seiko's 1965 lineup. Powered by the 4487 caliber with 34j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-d958a313ee3e]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1965

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