Seiko Cal. 3831 - 992

Released in 1973, the Cal. 3831 with design code 992 was part of Seiko's domestic market collection. Powered by the 3831 caliber with 23j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-7ceb1051dede]

Also known as: Crown, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1973

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