If you've been looking for a fish tank oxygen pump, then your search is over! That's because our product is portable, small size, provide enough to fill your fish tank and aquarium. It's a nice choice for you. Features -Material: plastic -Using , practical and durable. It is not easy to break. -This excellent performance and practical aquarium air pump is always provided by us. -Large , stable and uniform bubble generation, and obvious oxygen increase effect. -Lightweight, portable, easy to carry and use, it can bring you great convenience. -Increase the oxygen in the fish tank, which will keep your little fish in an activated condition. specification Power: 2W Air pressure: 0.02Mpa*2 : 3L/min*2 Applicable fish tank: below 1m/39.37inch Battery capacity (including battery): 4800mAh Auto-start after power failure: yes Continuous time: 35 hours Interval time: 70 hours Package list: 1 x Oxygen Pump 1 x Air Stone 1 x Oxygen 1 x Power Line