Seiko Cal. 3816 - 649

The 3816-649 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3816 caliber with 32j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-be3943086c19]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1969

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