Seiko Cal. 3871 - 957

Released in 1988, the Cal. 3871 with design code 957 was part of Seiko's domestic market collection. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-b839582ff3af]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1988

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