The battery-operated pocket massager is compact but powerful generates very little noise while in use (comparable to the noise cell phones make while on vibrating mode). One end of the massager takes 4 interchangeable (included) massaging heads for different sensations and massaging needs which is great for soothing muscle pains caused by sports injuries or by long hours of work. The other end of the unit is smoothly rounded with no sharp edges. When turned on this smoother end produces much more gentle vibrations compared to that of the massaging end Fits in pockets and purses Four (4) interchangeable massaging heads for different needs Great companion for travellers