DescriptionIf you've been looking for a fish tank oxygen pump, then your search is over! That's because our product is portable, small size, provide enough air volume to fill your fish tank and aquarium. It's a nice choice for you.Features- Material: Silicone. - Power supply: 5V-9V. - This fish tank oxygen pump is made of silicone material for long-lasting use. - It is easy and convenient to use, and easy to store when not in use. - The weight is light, which will not increase your extra burden and weight. - USB power supply design, even if the power fails, you can use the moving power to continue power supply. - Low power consumption and good energy saving effect, practical to use.