Seiko Cal. 4425 - 806

The 4425-806 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4425 caliber with 30j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-e647504f41c2]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1979

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