Seiko Cal. 3821 - 630

This Automatic model from 1975 features a 38mm PVD Black case. Powered by the 3821 caliber with 33j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-dbe8e0dfb0b5]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1975

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