Seiko Cal. 3813 - 775

The Seiko 3813-775 represents an important milestone in Seiko's 1984 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-e3f3b48f5b5c]

Also known as: Tuna, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1984

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