Seiko Cal. 3813 - 890

The 3813-890 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3813 caliber with 21j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-0fb8cc4c2d0e]

Also known as: Sumo, Shogun

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1970

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