Seiko Cal. 3831 - 477

Released in 1968, the Cal. 3831 with design code 477 was part of Seiko's domestic market collection. Powered by the 3831 caliber with 32j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-8dd559fe37b2]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1968

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