Seiko Cal. 4578 - 990

The Seiko 4578-990 represents an important milestone in Seiko's 1987 lineup. It features a Silver dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-0d9ffe9ce53d]

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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