Seiko Cal. 4487 - 776

The Seiko 4487-776 represents an important milestone in Seiko's 1976 lineup. Powered by the 4487 caliber with 28j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-d0e0d0010e84]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1976

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