These Door Chimes are lightweight, magnetic, and aesthetically pleasing. It can be set up against metal doors or stuck to doors of other materials using double sided tape, velcro, etc. The design closely resembles a miniature singing bowl, with the clapper hanging from a string to strike it. The tone is soft but of moderate volume, and reverberates nicely. This Door Chime serves well as an entry bell because of that, meaning the sound that radiates from it helps clear out negative energy or intent from the area. They come in two styles: Oval and Rectangle. The dimension of the Rectangle door chime is 4″ x 2.75″ while the dimensions of the Oval Door Chimes are 3” x 2.25”. Purchase this unique gift as a gift to your friends and loved ones for different occasions.