Seiko Cal. 3821 - 165

The Seiko 3821-165 represents an important milestone in Seiko's 1973 lineup. With its 19mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-0fec1bdb2280]

Also known as: Monster, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1973

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