Seiko Cal. 3870 - 664

This Solar model from 1979 features a 40mm Stainless Steel case. Powered by the 3870 caliber with 31j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-8e6775f8d64e]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1979

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