Seiko Cal. 4456 - 357

The Seiko 4456-357 represents an important milestone in Seiko's 1972 lineup. Powered by the 4456 caliber with 31j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-e450f5729157]

Also known as: Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1972

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