Seiko Cal. 4445 - 677

The Seiko 4445-677 represents an important milestone in Seiko's 1987 lineup. Powered by the 4445 caliber with 20j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-fec0edff7993]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1987

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