This air pump electric air pump designs with quick-fill and high pressure. EMC approved. It can not only inflate items but also deflate products by sucking air out! Car power adapter and home power adapter are included, making it possible for indoor and outdoor use. ( Note: This air pump is not rechargeable and do not for balloons or inflating high pressure products, like tires, basketball and etc!) We have 3 nozzles of different size in the electric air mattress pumps – S, M and L, allowing you to inflate/deflate different items in any occasions! The inflatable mattress pump can work with 12V DC and 230V AC power supply. To inflatable, just put the inflatable head at the filling hold, then press the switch. To deflate, please put the inflatable head in the vent hole, then press the switch to deflate.(Note: friendly advised to use continuously for not over 15 minutes. So it's normal phenomenon then unit will automatically power off when the temperature over the setting value.) This air pump uses an advanced turbocharged duct design and high-quality ABS impellers, which greatly reduces its noise in operation, higher than most hand pumps on the market. Air pumps helps you saving time on inflating air mattress/airbed/bed, inflatable boat /raft, pool floats, inflatable pool, pool toys, inflatable furniture, swimming ring and more!