Seiko Cal. 3815 - 921

Released in 1967, the Cal. 3815 with design code 921 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-38be996ce8dc]

Also known as: Samurai, Monster

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1967

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