Seiko Cal. 3857 - 640

Released in 1998, the Cal. 3857 with design code 640 was part of Seiko's domestic market collection. With its 20mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-706a79abd7dc]

Also known as: Rally, Arnie

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1998

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