Seiko Cal. 3857 - 487

The Seiko 3857-487 represents an important milestone in Seiko's 1984 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-29da14d2a15c]

Also known as: Samurai, Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1984

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