Seiko Cal. 3813 - 641

The Seiko 3813-641 represents an important milestone in Seiko's 1980 lineup. With its 19mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-5bbb34d53666]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1980

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