Seiko Cal. 3813 - 850

The 3813-850 is a sought-after Solar piece from Seiko's golden era. Powered by the 3813 caliber with 18j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-0010bc432dee]

Also known as: Bullhead, Flighty

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1974

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