Help your finned friends breathe easily with the Penn-Plax Rechargeable Battery 2 Outlet Aquarium Air Pump! This pump provides a constant stream of oxygen to keep your tank aerated. It is battery operated to keep the oxygen flowing in the event of a power outage or when transporting. It can also be used to aerate bait and live catches during your next fishing trip! It features a noise-absorbent rubber base, LED battery power display, and recharges via a USB cable. Keep your scaly sidekick happy and healthy!