Product material: ABS + silicone jellyfish + electronic componentsProduct size: 18*10*23CMPower supply mode: battery (the product does not contain battery, you need to buy it separately)1. There are 2 buttons on the top of the lid of this product. Press the [ON/OFF switch button] to start the product. At this time, it is an automatic color changing mode. In this mode, there is an energy-saving design, and the light will alternately turn on off on with time. ;Press [Light Color Mode Key LIGHT] to manually change the LED display color, each time it is pressed, its color will change cyclically as follows: redbluegreenred, bluered, greenautomatic colorful changered... 2. The product has an energy-saving design: it will automatically stop after working for four hours, and it can be restarted by pressing the ON/OFF button again.Usage steps: 1. Add an appropriate amount of water and pour a certain amount of detergent to increase the softness and lubricity of the jellyfish and make the jellyfish swim more flexible and realistic 2. Soak the jellyfish in the water and soak it for half a day or a day. During this period, please carefully separate the tentacles of the jellyfish, and be careful not to break it. 3. Carefully remove the jellyfish, pour out the original water, and refill the water (purified water or ballast water, overnight water, which will reduce the generation of air bubbles and flow better!) to the top of the tank (the jellyfish swims) The key to it), then rinse the jellyfish and put it in the water tank. After adding water, add 2-3 drops of detergent to increase the swimming effect of the jellyfish.