Seiko Cal. 3870 - 580

The 3870-580 is a sought-after Solar piece from Seiko's golden era. Powered by the 3870 caliber with 22j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-3b8c08bba9d2]

Also known as: Helmet, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1967

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