Seiko Cal. 3821 - 122

The Seiko 3821-122 represents an important milestone in Seiko's 1972 lineup. It features a Black dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-9e340b3e8acc]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1972

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