Seiko Cal. 4491 - 521

The Seiko 4491-521 represents an important milestone in Seiko's 1973 lineup. It features a Navy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-7df92b81499a]

Also known as: Rally, Sea Horse

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1973

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