Seiko Cal. 4581 - 631

The Seiko 4581-631 represents an important milestone in Seiko's 1983 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-6251d1eaf39f]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1983

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