Seiko Cal. 4516 - 525

This Spring Drive model from 1971 features a 34mm Stainless Steel case. It features a Green dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-4214a5b68398]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1971

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