Attention for use: 1.After adding water, put in the jellyfish, the jellyfish will float on it, you need to add some detergent (2-3 drops), use a stick to get the jellyfish into the water and roll to remove the air on the surface. 2.USB Connect(Not Chargeable) 1,Relax on Working or Studying: This jellyfish lamp can display the underwater atmosphere of marine life, which is peaceful and soothing, help you relax the stress on working or studying. 2,Jellyfish Move Like in The OceanWe have improved the production. The base is equipped with an intermittent airflow device to give the jellyfish sink time and then blow air to make it float. Why does the jellyfish only float on top? Please add 2 or 3 drops of detergent, to reduce the density of the water to make the jellyfish sink. Combining the light and airflow, you can feel the beauty of marine life. 3,Highly Recommend Night Lightplease trust me , you will in love with this jellyfish lamp.it does not make any sound which allows you to sleep without any interference. it bring an interesting view in your room. It especially a huge hit with kids they love seeing the jellyfish swimming around and the change color keeps them entertained. 4,Easy to Set and Assemble we send it with product instruction,Safe and secure use without leakage.The convenient remote control can switch and adjust the color of the jellyfish lamp without standing up. The "flash"/"strobe"/"fade"/"smooth" button on the remote control can easily adjust the speed and color of the light change. 5,Perfect Gift This dancing jellyfish lamp is very suitable to buy to decorate the room. Get the perfect gift for boys, girls or anyone who enjoys the beautiful live sight of marine, underwater life, ocean environment on their desk. Great gift and Decoration for Birthday, Christmas, Holiday, Party, Home Office Bedroom Room. Type: LED modeling light Product voltage: DC5 (V) Product current: 150mA Product power: 0.75 (W) Product frequency: 50/60 (Hz) Product accessories: jellyfishes 2 + USB cable 1 + English manual(Big Lamp with 3 jellyfishes) Input voltage/current: DV5C/500mA Product material: ABS+acrylic Power supply mode: USB cable connection / 4 AAA batteries (Not Included) Remote control: button battery Size: Small Size: 107x107x300mm Large Size: 140x140x350mm Weight: Small: 500g Large: 900g Life: 10000000 (H) Protection level: IP65 Scope of use: decorative lights Light color: colorful Power: 2.5w (W) 1 * LED jellyfish lamp (Not include Battery) 1 * USB Cable 1 * Remote Control 1 * User Manual