Superior Texture: The mini water pump is made of copper movement. It is harmless, lightweight, durable, waterproof, and will not cause any harm to fish. Strong Airflow: The small submersible pump maintains stable operation and has a clear oxygenating effect with strong airflow, stable air output, and even bubbles. Battery Powered: The small water pump has a universal USB charging interface, compatible with rechargeable batteries. It is recommended to use fast charging sparingly for high-power phones, as too much power can reduce the lifespan. Easy to Carry: With a lightweight design, the micro water pump is portable to move. Additionally, its low weight adds no extra burden for you to put it in your bag. Extensive Use: The 5V water pump is suitable for most reptiles, amphibians, frogs, small fish, etc. Suitable for all aquariums. Meets most of your oxygen needs. Product Description Descriptions: It has a clear oxygenating effect with strong airflow, stable air output, and even bubbles. Equipped with a USB interface for easy charging. No noise for quiet operation. Specifications: Product Name: USB Rechargeable Oxygen Pump. Rated Voltage: 5V Charging Application: Mobile phone socket, charger, power bank, computer USB, etc. The product does not include mountaineering clips Product List: Mini Water Pump * 1