Seiko Cal. 3831 - 153

This Hand-Winding model from 1971 features a 35mm Two-Tone case. Powered by the 3831 caliber with 31j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-c78cd12e4329]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1971

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