Seiko Cal. 3815 - 384

The Seiko 3815-384 represents an important milestone in Seiko's 1967 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-63823aee20bf]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1967

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