Seiko Cal. 3871 - 257

The Seiko 3871-257 represents an important milestone in Seiko's 1978 lineup. With its 18mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-9944f585efb8]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

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