Seiko Cal. 4578 - 635

The Seiko 4578-635 represents an important milestone in Seiko's 1979 lineup. Powered by the 4578 caliber with 30j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-bdd3c65186e8]

Also known as: Panda, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1979

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