Seiko Cal. 4456 - 721

The Seiko 4456-721 represents an important milestone in Seiko's 1976 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-66e5780f4d53]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1976

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