Feature:1. DC permanent magnet motor is used to make the piston reciprocate in the cylinder to produce a large displacement and high pressure airflow.2. Selected highquality aluminum alloy materials, phosphate surface treatment, fast heat dissipation, corrosion resistance, and good adhesion.3. Oxygen pump, the oilfree lubrication design, which can produce purer compressed air, and the oxygen increase effect is continuous and stable.4. Easy to use and install, pure air can be discharged as long as the corresponding battery is connected, and the working stability is strong.5. Can provide uninterrupted bubbles and highquality oxygen supply, widely used in aquariums, fish tanks, pond, pool, aquaculture, etc.Specification:Item Type: Oxygen PumpMaterial: Aluminum AlloyWeight: Approx. 1190g / 42ozProduct Size: Approx. 14.5x10x7.3cm / 5.7x3.9x2.9inPower: 18WVoltage: DC 12VPressure: 0.06MPaExhaust Volume: 38L/MinUses: Suitable for aquaculture, fish tanks, aquariums.Package List:1 x DC Oxygen Pump1 x Splitter1 x Connecting Tube1 x Manual1 x Connecting Wire1 x Copper NozzleNote:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. This is a direct current pump, which is in contact with direct current. The pump is not submersible, please do not put it in the aquarium and keep it dry.