A stimulation and treatment device has a housing with a wide first end part and a narrow second end part. A transducer mounted inside the first end part generates linear motion in response to applied power, and a rounded protrusion extending from the first end part is mechanically connected to the transducer and moved such that the motion can be applied to a patient. A control module mounted inside the first end of the housing is configured to control the delivery of power to the electromechanical transducer. The first end part is substantially spheroidal, and the second end part is substantially cylindrical and extends from the substantially spheroidal first part at the opposite side from the movable rounded protrusion. The shape and distribution of weight results in a user friendly and ergonomically correct device that can be programmed or configured to be useable for a wide range of treatment procedures.