Seiko Cal. 3870 - 780

This Solar model from 1966 features a 37mm PVD Black case. Powered by the 3870 caliber with 25j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-81c548fa69fe]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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