Seiko Cal. 3879 - 661

The Seiko 3879-661 represents an important milestone in Seiko's 1973 lineup. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-1dbb36a5bd07]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1973

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