This sand art bowl can create over 80 designs completely adjustable by you! Its soothing, mesmerizing patterns can relax you and destress your mind. A small metal ball smoothly glides through the fine sand to endlessly produce symmetric designs in the sand as you relax. Tips for changing the designs: 1) Remove the metal ball from the sand then remove the cover by lifting it from the base. The cover is attached to the base with magnets. 2) Remove the magnet and place it in a new slot for a different design. 3) For more designs, place the second magnet into a different slot for multiple designs at once (use a corresponding ball for each magnet) 4) Once you have made the switch, simply place the cover back on and place your metal ball or balls in the sand. The product is designed for the United States (2-prong plug) standard 120V and 50/60Hz AC electricity. For international orders using 220V, a step-down voltage converter adapter will be required. Please check your country’s voltage before plugging in the device and reach out if you’re unsure. Safety: The bowl is not meant to run 24/7. Do not leave the device on while unattended and make sure you shut it off if you’re going to be away for an extended period of time.