Seiko Cal. 4456 - 153

The Seiko 4456-153 represents an important milestone in Seiko's 1975 lineup. Powered by the 4456 caliber with 17j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-818e106640d2]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1975

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