Welcome to our store! We present our ultra-quiet aquarium oxygen pump, with a noise level as low as 40dB. It is equipped with 4 non-slip rubber feet to prevent slipping and reduce noise, so you can sleep near it without being disturbed. The aquarium air pump has a pure copper motor, which includes a high-frequency all-copper voltage stabilizer. This design ensures low resistance, reduced consumption, and stable oxygen supply for your aquarium. Our USB DC-powered aquarium air pump can be easily connected to a power bank, allowing for outdoor use. It automatically stops working when the power is cut, ensuring safety. The small and portable design of our mini aquarium oxygen pump makes it easy to carry and suitable for both indoor and outdoor use. It can even be used as a fishing oxygen pump for your convenience. With an energy-saving power of 1.5W, our aquarium oxygen pump provides a healthy environment for your fish without overheating. This package includes 1 x aquarium oxygen pump, 1 x charging cable, 1 x air hose, and 1 x air stone. 100% satisfaction: Our customers are our top priority. If you find any product problems after receiving the item, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service. Thank you for choosing our aquarium oxygen pump.