Seiko Cal. 3821 - 102

Released in 1967, the Cal. 3821 with design code 102 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-8cb63eb9df4b]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1967

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