[USB Aquarium Pump]: Looking for a way to oxygenate your small aquarium? Don't worry, the USB aquarium has made a strong debut! It provides stable oxygen supply, is super quiet, and has become the right hand of many aquarium enthusiasts thanks to its compact size and powerful features. Designed for small aquariums, it is also widely used in outdoor applications such as wild fishing, fish transportation, aquaculture, and so on [Silent Oxygenation]: This USB aquarium oxygenator is powered by an ultra-quiet, pressurized electric ceramic motor, which effectively reduces friction and wear between components when the motor is running, reducing noise. It operates at only 20 decibels, so quiet that you barely notice it's running, and at the same time it can powerfully oxygenate at a rate of 210L/H, creating a quiet and oxygen-rich living environment for fish [Lightweight and Portable]: It is also thoughtfully equipped with an exclusive strong buckle, can be easily hung on the waist, backpack or other outdoor container, which significantly reduces the probability of loss, for your outdoor trip