Seiko Cal. 3815 - 922

The 3815-922 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3815 caliber with 33j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-0fa5aa1cfdbd]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1972

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