Can to pump for bubble billow effect ( pump not included) IP68 waterproof rate, sealed design, can be fully submerged in water 6 colour changing LEDs and an stone combined in a single decor piece (2 inches diameter) -in create bubbles for improved oxygenation and gas exchange Creates a decorative array of bubbles and colorful column of in your aquarium fish tank bubble maker fill with stone, can at the bottom of tank steady with 3 mini suction cup. The color-changing Led bubble light come with 5.58 ft long cable, can be submersed into water, widely for aquariums, fish tanks, pools and so on. It create a colorful column of bubbles in your aquarium with endless color combinations thanks to 6 color changing RGB leds. Directions for : Attach airline tubing (sold separately) to Inlet on the LED Bubble Ring. Make Airstone is securely in place. Airline Tubing to an Pump ( pump is not included). Cord to Transformer. Position and anchor LED Bubble Ring by covering Flaps with gravel. Plug Transformer and Pump into electrical outlet. Note: Please put the stone into water to soak for 15-20 minutes before you connected it to the pump, so bubbles can emit all around. If the bubbles not come out of whole circle and only coming out one side of the disk, your should the pump you has enough to work it. Plug Type: EU Plug, it applies to Indonesia, Germany, , Spain, and so on. colour:black Material:ABS Package Contents: 1 * Bubble Light 1 * 3/16 Inch Tube 1 * User Manual 1 * Cable 1 * 12V DC Adapter Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.