Seiko Cal. 3813 - 478

The 3813-478 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3813 caliber with 23j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-bc0802efdb93]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1990

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