Seiko Cal. 3871 - 984

Released in 1994, the Cal. 3871 with design code 984 was part of Seiko's domestic market collection. Powered by the 3871 caliber with 31j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-ac10ef348d13]

Also known as: Turtle, Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1994

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