Features: Experience the convenience of aeration with our Double Use Miniature Fish Tanks USB Portable Oxygenators, crafted to enhances your environment effortlessly. Powered by any USB interfaces, this oxygen pumps operates quietly, ensuring a quiet atmosphere while effectively boosting oxygen in your aquariums. Suitable for aquarists seek to optimizing their fish's habitat, this portable oxygenators is a necessity for maintaining high water quality and promoting healthy growth. Whether you're home or traveling, this device is suitable for fish tanks during camping trips or temporary outdoor setups, ensuring your pet always have access to freshness oxygen. Crafted from food grade ABS and stainless steel, our USB powered oxygen pumps is not only durable but also safe for various type of creature, making it essential tool for every fish enthusiasts' collection. Specifications: Component:Food Grade ABS+Stainless Steel Color:Black/White/Blue Size:Approx.7.5x8.5x3.50cm/2.95x3.34x1.37inches Package Includes: 1Set Double Use Miniature Fish Tanks USB Oxygenators note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind. Due to the differences between different monitors, the picture may not reflect the actual color. Thanks!