Seiko Cal. 3890 - 801

The 3890-801 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3890 caliber with 26j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-b9920df42ee9]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1985

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