Seiko Cal. 3813 - 904

The 3813-904 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-d0436a861ff3]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1996

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