Seiko Cal. 3813 - 740

The 3813-740 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-29caadb6dfd4]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1992

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