Easy to Use -- The inflatable mattress pump is compatible with 12V DC and 110 -240V AC power supply. To inflatable, just put the inflatable head at the filling hold, then press the switch. To deflate, you should put the inflatable head in the vent hole, then press the switch to deflate. Our electric air mattress pumps are simple to operate.Portable -- The inflatable mattress pump is small and lightweight, making it convenient to use it indoor and outdoor. At a travel-friendly dimension, you can easily take air pumps anywhere you go!Multi-Purpose -- Including car power adapter & home power adapter. This inflatable mattress pump is a powerful inflator and deflator for both indoor and outdoor use, especially for travel and outdoor activities. air pumps helps you saving time on inflating air cushions, air beds, air boats, inflatable furniture, swimming ring and more!Powerful Electric Air Pump -- The air pumps are so powerful that 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 NOT FOR BALLOONS!!!!!! )3 Nozzles to Choose -- 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!