Reversible for inflation and deflation AC/DC,50W This is a high volume pump. It is intended to inflate/deflate items such as inflatable boats, air mattresses, etc. Size:5.5*4.7*4inches Package Includes: 1*air pump 3*nozzles 1*adaptor 1*car-powered plug Tips: Keep this air pump out of the reach of children. Do not exceed 10 minutes of continuous operation for longer lifetime. Do not obstruct the inflation/deflation port and keep them ventilated all the time. Risk of electric shock, do not operate under moist conditions, and store indoors.