Seiko Cal. 3812 - 377

Released in 1967, the Cal. 3812 with design code 377 was part of Seiko's domestic market collection. With its 22mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-b4ba82ef20c2]

Also known as: Shogun, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1967

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