Seiko Cal. 3813 - 901

The 3813-901 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-34b2bf82ee2b]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1975

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