Seiko Cal. 4456 - 947

The Seiko 4456-947 represents an important milestone in Seiko's 1977 lineup. It features a Green dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-e8dc4adaa62c]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1977

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