Seiko Cal. 5644 - 446

The Seiko 5644-446 represents an important milestone in Seiko's 1969 lineup. It features a Black dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-38625dd06c20]

Also known as: World Timer, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1969

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