Welcome to our store Volcano effect-color changingRomantic LED Light Aquarium Fish Tank Bedside Table Desk Lamp Water Sea Mood Relaxing Perfect for children's bedrooms， living rooms， offices and more. The Animated Volcano effect Lamp brings simulated marine life and colorful LED lighting to any room. Fun and amazing If possible， you could buy a USB line， and contact it with computer or adaptor for continuous lighting LED lighting effect realistic fish Soothing desk toy or corporate gift for the office Volcano Product Features:1. Brand new，high quality2. This Desktop Volcano allows you to get up close without running the risk of being incinerated by flowing molten lava3. Has a red LED so it looks great in the dark4. Power suply: 3xAA batteries(not Included)5. Size: 23x7x7cm/L*W*HHow to use it:1. Pull the tank cover， add water inside till full2. Put the small Jellyfish into the water3. Using the 3x AA Battery (not included)4. Press the On/Off Button to get work5. It can also be powered by DC 4.5V/0.5A Adapter(not Included) Warmly tips:Please note that slight color difference should be acceptable due to the light and screen. Package included:1 x LED Aquarium fish tankplease check my store for more types of aquarium fish tankHave a nice day !!^-^