Seiko Cal. 3831 - 385

The 3831-385 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-7762f8df13ce]

Also known as: Helmet, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1968

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