Seiko Cal. 4420 - 410

This Spring Drive model from 1969 features a 36mm Gold-Plated case. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-5b9c8958771f]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1969

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