Seiko Cal. 3831 - 805

The 3831-805 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-204d07ae0ca1]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1970

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