Seiko Cal. 3813 - 878

The 3813-878 is a sought-after Solar piece from Seiko's golden era. Powered by the 3813 caliber with 28j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-640a5d7b5f51]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1972

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