Seiko Cal. 3893 - 490

The 3893-490 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3893 caliber with 28j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-89fa4510c63a]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1971

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