Seiko Cal. 3853 - 404

This Spring Drive model from 1971 features a 45mm PVD Black case. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-6e6b2c17c5e4]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1971

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