Seiko Cal. 3877 - 976

The Seiko 3877-976 represents an important milestone in Seiko's 1965 lineup. Powered by the 3877 caliber with 22j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-5e3ee4677395]

Also known as: Bullhead, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1965

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