Seiko Cal. 3871 - 102

Released in 1969, the Cal. 3871 with design code 102 was part of Seiko's domestic market collection. Powered by the 3871 caliber with 29j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-7222c6043e4d]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1969

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