Seiko Cal. 3831 - 348

The 3831-348 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-bfbfc7033c6d]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1988

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