this quiet air pump provide enough oxygen in aquariums or ponds.helps creat a health aquarium environment and ensure the growth of fish, shrimp, turtles and aquatic plants. The oxygen pump is suitable for home aquarium, outdoor fishing, air pump back up, aquarium transportation, pond. Noise reduction The base added rubber feet designed helps reduce the noise. hook-type air pump designed can be fixed stable and will not fall off easily like as the suction-type air pump after using for a while Voltage: 110-240V Power: 1W,2W Air pressure: 0.015 MPa Single Volume: 3L / min Air pipe Length: 31.5 in USB Line Length：39.5 in Applicable: up to 200 gallons The package includes: Aquarium air pump * 1 Air hose * 2 Check vavle*2 Air Bubble stone *2(White or black) USB Line * 1 Description *1