Seiko Cal. 3878 - 973

This Hand-Winding model from 1986 features a 40mm Gold-Plated case. Powered by the 3878 caliber with 29j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-25091aeb44e9]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1986

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