Seiko Cal. 3817 - 236

The 3817-236 is a sought-after Automatic piece from Seiko's golden era. With its 19mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-6106ae8ff1de]

Also known as: World Timer, Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1971

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