Seiko Cal. 3813 - 523

Released in 1973, the Cal. 3813 with design code 523 was part of Seiko's domestic market collection. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-aa8ac27be671]

Also known as: Sumo, Panda

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1973

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