Seiko Cal. 3813 - 864

The Seiko 3813-864 represents an important milestone in Seiko's 1980 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-cf596e69ca16]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1980

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