Seiko Cal. 3893 - 490

Seiko 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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