Seiko Cal. 3813 - 385

The Seiko 3813-385 represents an important milestone in Seiko's 1970 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-a9291fb18466]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1970

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