Abstract: A finger ring having a band for receiving a human finger, a chamber projecting from the top of the band comprising two complementary round hollow members joined by the engagement of circumferential male threads on one member and circumferential female threads on the other member to form a tight seal, one of said members being affixed to said band and the other member being rotatable on said threads and carrying ornamental or decorative effects on its outer surface, a battery and a vibrating motor being snugly received in said chamber, said battery being adapted to power said vibrating motor by making up the male and female threads by manual rotation or twisting of the one said member to bring the vibrating motor into electrical contact with the battery, the rotation or twisting being reversed to turn said vibrating motor off, all without breaking said seal.