Seiko Cal. 5644 - 459

Released in 1966, the Cal. 5644 with design code 459 was part of Seiko's domestic market collection. It features a White dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-5990e039d942]

Also known as: Navigator, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1966

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