Seiko Cal. 3816 - 742

The 3816-742 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3816 caliber with 30j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-c72da616f5bf]

Also known as: Tuna, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1971

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