Powerful / inexpensive system operates on 110 volt household current. Great for keeping fish indefinitely. Complete system with pump, airline tubing and weighted airstone. Rubber base mount – very quiet. Fresh or salt water. 1 year warranty.Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.