Seiko Cal. 4551 - 240

The Seiko 4551-240 represents an important milestone in Seiko's 1986 lineup. Powered by the 4551 caliber with 33j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-ece34e198e69]

Also known as: Navigator, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1986

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