Seiko Cal. 4578 - 378

This Spring Drive model from 1980 features a 46mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-2dd5cd5da5c3]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1980

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