Seiko Cal. 3813 - 381

The 3813-381 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-fcfa4799ed4d]

Also known as: Sumo, Panda

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1976

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