Seiko Cal. 3875 - 909

This Spring Drive model from 1975 features a 39mm Hardlex-Coated Steel case. Powered by the 3875 caliber with 30j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-aa3de5c9cac6]

Also known as: Bullhead, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1975

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