Seiko Cal. 3870 - 781

Released in 1965, the Cal. 3870 with design code 781 was part of Seiko's domestic market collection. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-ce7197478fc6]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

44mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1965

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