Seiko Cal. 3812 - 816

The Seiko 3812-816 represents an important milestone in Seiko's 1968 lineup. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-77ba884c795f]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1968

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