Seiko Cal. 4556 - 641

Released in 1968, the Cal. 4556 with design code 641 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-d5bfa72343fa]

Also known as: Rally, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1968

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