Seiko Cal. 4456 - 612

The Seiko 4456-612 represents an important milestone in Seiko's 1981 lineup. Powered by the 4456 caliber with 28j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-433df38b37ec]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1981

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