Seiko Cal. 4456 - 904

The Seiko 4456-904 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-f6f24bb29c31]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1966

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