Seiko Cal. 3816 - 560

This Hand-Winding model from 1966 features a 39mm Stainless Steel case. Powered by the 3816 caliber with 20j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-6eafdf027578]

Also known as: Sumo, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1966

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