Seiko Cal. 3813 - 220

The 3813-220 is a sought-after Solar piece from Seiko's golden era. Powered by the 3813 caliber with 31j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-cf96a37d15ff]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1972

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