Air Stash – a flash drive that you can access with Wi-Fi enabled gadgets. Interesting. AirStash like a USB flash drive to drag & drop the files you want to your SD card while charging the built-in lithium polymer battery, then unplug & play on all of your browser-enabled WiFi devices. You can store most multimedia files on the AirStash such as movies, music, photos and documents and easily access them with Wi-Fi enabled gadgets such as the iPhone. The AirStash has a built-in lithium polymer battery that you can charge via USB.