Seiko Cal. 3815 - 148

The Seiko 3815-148 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-88780a701ff8]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1967

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