Seiko Cal. 3820 - 631

The Seiko 3820-631 represents an important milestone in Seiko's 1973 lineup. It features a Green dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-3de0a37589cb]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1973

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