Overview: This product imitates the effect design of volcanic eruption, adopts LED lighting, and the small balls in the water tank will continuously flow in, which is very ornamental and placed in the living room, office and other places. At the same time, it is also a bedside night light, a table lamp, and an atmosphere adjustment lamp. It is also a good gift for children and friends. Note: 1. Remove the product and pull open the water tank cover. Add water to the water tank to fill the water without overflowing. 2. Put red volcanic beads on the top of the product and at the cover of the water tank 3. Remove the battery cover and insert 3 AA batteries. 4. Press the "Power Switch" ON / OFF button on the back of the product to turn the power on / off. 5. Press the "Product Switch" on the front of the product again, the indicator light will light up, and the volcanic beads will pop up repeatedly. 6. The product can use a transformer (output DC4.5V, 500mA transformer, the transformer is not shipped, need to be purchased) Specifications: Power mode: three AAA batteries or USB cable (without battery) Interface type: USB Lighting: LED color changing light Product size: 105 * 105 * 280 (mm) Gross weight: 0.45kg Package Content: 1 x Product color box packaging 1 x USB charging cable 1 x Jellyfish lamp