This is aquarium fish tank oxygen air pump with functions of low noise. It is high-performance, large volume, for small and medium-sized fish tank. USB powered design, perfectly suitable for using in all kinds of ourdoor fishing, power cut emergency, aquaculture oxygenation, etc.Features- Brand: POPETPOP.- Color: Random color.- Material: Silicone.- Package size: 18 x 15 x 8 cm (Please refer to the pictures, the specific size is shown).- High-performance, large volume, this section is for small and medium-sized fish tank plus oxygen.- Low-power, economic power-saving, Continuous operation and long service life.- Micro design: Compact and mini design make the air pump aquarium air stone lightweight to carry outside.- And it is also occupy littlest space and suitable for small tabletop fish tank.- Slient design, reduces vibrations and eliminating noise,ensuring your good sleep and work.Packing list: 3 x POPETPOP Aquarium Air Pump