Seiko Cal. 3813 - 155

The 3813-155 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3813 caliber with 32j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-af332e919a23]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1971

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