Seiko Cal. 3831 - 656

This Automatic model from 1987 features a 41mm Two-Tone case. Powered by the 3831 caliber with 33j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-c17f5b22595c]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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