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. high‑quality aluminum alloy materials, phosphate treatment, fast heat dissipation, resistance, and good adhesion. 3. Oxygen pump, the oil‑free 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 and high‑quality oxygen supply, widely used in aquariums, fish tanks, pond, pool, aquaculture, etc. Item Type: Oxygen Pump Power: 18W Voltage: DC 12V Pressure: 0.06MPa Exhaust Volume: 38L/Min Uses: Suitable for aquaculture, fish tanks, aquariums Note: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. Color: As Shown Material: Metal+Plastic Package Contents: 1set x Oxygen pump Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.