Seiko Cal. 4451 - 172

The Seiko 4451-172 represents an important milestone in Seiko's 1990 lineup. Powered by the 4451 caliber with 19j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-a4dc2fba6ab6]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1990

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