Seiko Cal. 3813 - 878

Seiko 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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