Seiko Cal. 3815 - 957

This Quartz model from 1966 features a 34mm Two-Tone case. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-87f54356d46b]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1966

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