Seiko Cal. 3871 - 448

The Seiko 3871-448 represents an important milestone in Seiko's 1975 lineup. Powered by the 3871 caliber with 31j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-3ad5ed8269db]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1975

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