Seiko Cal. 3815 - 399

This Spring Drive model from 1976 features a 35mm Two-Tone case. It features a White dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-90aab13f9612]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1976

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