Oxygen pump for fish tank mute mini portable USB energy saving Features:1. Our air pump is Using high-tech special internal muffler design, which makes it super compact, super quiet, light weight and long service life.2. Power consumption of this oxygen pump is only 1.0W, with flow rate 240 ml/min, high energy saving.3. Oxygen air pump is stable performance, is best for small and medium-sized fish tank plus oxygen. It is also perfectly suitable for using at all kinds of high-grade aquarium, aquaculture oxygenation or spout decoration.4. This air pump can add enough oxygen in a fish tank with long service life.With a good air stone, puts off a nice spread of bubbles at a pretty good pace, which will makes your fish, betta or shrimp love it.5. Aquarium air pump is small, light weight and portable. Notice: 1. This pump cannot charge,must plug in to use,it will stop once plug out2. There may have some differences in motor appearance due to different versions3.Due to the different monitor and light effect, the actual color maybe a slight different from the picture color4. Please allow a slight differs due to manual measurementSpecifications:Cable length: 1.5mPower supply: 5V USBSize: 5.5 x 4.5 x 1.8 inches includes:1 x Oxygen Pump with Cable1 x Air Tube