Seiko Cal. 3831 - 306

This Automatic model from 1968 features a 39mm Two-Tone case. Powered by the 3831 caliber with 17j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-7447e761f773]

Also known as: Panda

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1968

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