Abstract: A grip and an arm orthogonal to each other are rotatably connected to be folded together. The grip accommodates dry cells. A plurality of projections for massaging are formed on the lower surface of the free end of the arm. An interior vibration device is provided in the free end of the arm. In use, the grip and the arm are extended orthogonally at the connection portion. When the projections are pressed against sore muscles, a temporary holding stopper retracts allowing a contact spring to close to operate the vibrator. Vibration is transmitted to the muscles through the projections.