Features: Can rotate by 360 degree. Have the suction pad on the tank wall tightly,when the buckle climb loosen help eliminate "dead spots" in your aquarium. This is very important to the corals in your tank, as the waste that they produce during respiration needs to be carried away from the tissue and to your filtration system. Throw the buckle climb hard until the suction pad suck the tank wall completely. High efficiency, energy-saving and long service lifetime. Suitable for saltwater and freshwater aquariums Technical parameter: Model: JVP-120 Voltage: 220-240v/50Hz Power: 6W Output: 3000L/h Weight: 03kg Dimensions: 6.2" x 4.3" x 4.6"