Seiko Cal. 4578 - 635

The Seiko 4578-635 represents an important milestone in Seiko's 1966 lineup. It features a White dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-0703737714e5]

Also known as: Samurai, Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1966

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