Seiko Cal. 3813 - 920

The 3813-920 is a sought-after Solar piece from Seiko's golden era. Powered by the 3813 caliber with 20j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-c751b950788a]

Also known as: Emperor, Arnie

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1967

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