Seiko Cal. 3821 - 371

This Spring Drive model from 1983 features a 40mm Hardlex-Coated Steel case. Powered by the 3821 caliber with 23j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-a00bea1cceaf]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1983

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