Seiko Cal. 3881 - 656

The Seiko 3881-656 represents an important milestone in Seiko's 1979 lineup. With its 19mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-f141396d4c0e]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1979

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