Seiko Cal. 4520 - 937

This Hand-Winding model from 1972 features a 40mm Two-Tone case. It features a White dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-69bb8d174b69]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1972

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