Seiko Cal. 4578 - 987

This Spring Drive model from 1996 features a 43mm Stainless Steel case. It features a White dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-648c9af18ab9]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1996

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