Seiko Cal. 4520 - 938

This Hand-Winding model from 1982 features a 37mm Gold-Plated case. Powered by the 4520 caliber with 25j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-e87668b441fb]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1982

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