Seiko Cal. 4590 - 981

Released in 1991, the Cal. 4590 with design code 981 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-68bf7120bd6d]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1991

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