Seiko Cal. 3857 - 371

The Seiko 3857-371 represents an important milestone in Seiko's 1998 lineup. With its 18mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-1b92a1c86134]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1998

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