Seiko Cal. 4578 - 313

The Seiko 4578-313 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-b4806a79fec3]

Also known as: Sumo, Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1983

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