USB Rechargeable Oxygen pumps delivers 14 hour continuous runtimes with energy efficient charging,solvings short battery lifves issue in traditional aerator for aquariums and outdoor fishing. Quiet operations power by advanced noise reductions technology ensures peaceful for home aquariums or office fishtanks without disruptive vibrations. Great for pet owners,frequent travel,and outdoor fishing enthusiasts searching portable for fish tanks or mobile oxygen supply during camping trip. Perfectly for indoor fish tanks,outdoor fishing setups,or travel with its automatic power base on real time oxygen levels. Upgraded ABS construction withstands outdoor use while maintaining portability,ensuring great aeration for underwater pet in any.