Seiko Cal. 3821 - 870

The Seiko 3821-870 represents an important milestone in Seiko's 1971 lineup. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-2c1bd67d3d52]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1971

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