Seiko Cal. 3816 - 727

The 3816-727 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3816 caliber with 19j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-ab5c34e3e85a]

Also known as: Crown, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1977

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