Seiko Cal. 4550 - 594

Released in 1972, the Cal. 4550 with design code 594 was part of Seiko's domestic market collection. It features a Black dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-fd7af23b8a1a]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1972

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