Seiko Cal. 3831 - 938

The Seiko 3831-938 represents an important milestone in Seiko's 1966 lineup. Powered by the 3831 caliber with 32j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-9199a6cfd570]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1966

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