gravity sensor coaster kitchen tool cup mat led illumination household

100% new brand and the light-emitting principle of this product is rgb (red, green, blue) seven colors, gravity-sensing button illumination, and cyclic flash method. the light transmitting portion is acrylic transparent. install power by: 3 x aaa batteries(not included) the principle of illumination, when the cup is placed on the coaster, gravity pushes the bottom button to trigger the power to illuminate. when the cup is removed from the coaster