Seiko Cal. 3816 - 884

This Spring Drive model from 1966 features a 40mm Hardlex-Coated Steel case. With its 20mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-9c3c60805e8f]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1966

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