To provide a miniaturized vibrator with water-proofing/moisture-proofing functions.

The miniaturized vibrator is structured to store a cylindrical body 10 which has a vibration motor 7 in a housing 30 which has a lid 20 and an opening 33 on the bottom 32. An elastic switch member 40 with a flange 41 along the peripheral edge is disposed on the inner bottom of the housing 30 to seal the opening 33. By attaching and fixing the lid to the body, an O-ring 13 of the body 10 and the lid 20 are closely attached to each other to seal a recess 11 of the body. By attaching the housing 30, which supports the elastic switch member 40 with a bracket 32 inside the housing 30, to the body 10 from the side opposite from a circuit board 8, the flange 41 is held between the end edge 16 of the body and the bracket 32 to seal the inside of the body.