Seiko Cal. 3821 - 473

The Seiko 3821-473 represents an important milestone in Seiko's 1978 lineup. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-7a2b79eb1ab5]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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