1、ADJUSTABLE AIR VOLUME: Aquarium oxygen pump is super silent and adjustable, with potential knob adjustment, easy to adjust the air volume and easy to use. 2、LARGE AIR VOLUME: Aquarium aerator adopts newer liner technology, the power is not false, and the air volume is so large that it can even drive four large sand plate. 3、PAINTING SURFACE: Aquarium air pump surface adopts high gloss painting method with gorgeous colors, and 2 check valves are attached inside to prevent water backflow. 4、APPLICABLE SCENES: Aquarium fish tank aerator is suitable for a variety of situations, aquarium oxygenation, aquatic transportation, outdoor fishing, seafood market. 5、Great Gift: It's a great gift for fishing enthusiasts, friends, family, and parents. 1 x Aquarium Air Pump2 x Check Valve1 x Instruction Manual Item Type: Aquarium Air PumpMaterial: ABSUse: Fish Tank Large Volume Oxygen PumpMaximum Air Volume: >10L/MIN x 2Maximum Air Pressure: 30KpaRated Power: 5.5WProduct Size: Approx. 13x12x22cm / 5.1x 4.7x 8.7in