Seiko Cal. 4578 - 816

The Seiko 4578-816 represents an important milestone in Seiko's 1978 lineup. It features a Cream dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-7d2ba92f2cf8]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1978

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