Seiko Cal. 4550 - 585

The 4550-585 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-0bd28969fc3a]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1967

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