Seiko Cal. 3831 - 109

The 3831-109 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3831 caliber with 22j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-5eb9c1f25b5d]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1968

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