Seiko Cal. 3851 - 977

This Hand-Winding model from 1976 features a 34mm Two-Tone case. Powered by the 3851 caliber with 18j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-eb06447e348d]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1976

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