About This 5W Mini Air Pump: 5 L/min; Pressure is 0.02 Mpa; Water depth 5.9 Ft; Powerful volume; Compact shape, fashion nice smooth mirror, easy to carry, classic all black color, made of durable ABS material Adjustable Flow Rate: Rotate button on top to adjust air volume, meet the daily oxygen needs of your fish tank; Makes your aquarium oxygen levels high and helps keep your fish healthy Dual Outlet Oxygen Pump: Come with 2 air stone; 2 check valve; 3 connectors and two hoses; You can use 2 air holes at the same time, if you only need one, you need to use a connector Ultra Quiet Pump For Fish Tank: Exquisite rubber foot pads, further reduce the noise during operation of the air pump; Noise is less than 40db; when running at maximum capacity, smaller air volume, lower noise Up to 160 Gallon: Suitable for freshwater saltwater; If the air pump place on 25cm below the water surface, please install a return valve, otherwise the pump will flooding water,easily broken Overview Color : Black Brand : AQQA Material : Acrylonitrile Butadiene Styrene Item Weight : 296 Grams Product Dimensions : 3.9"L x 3.15"W x 1.6"H