Seiko Cal. 4520 - 318

This Spring Drive model from 1973 features a 34mm Stainless Steel case. It features a White dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-914174bda0bc]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1973

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