Well, just because you "don't get it" doesn't mean it is useless! Why buy something you don't understand? But, that's another story. I listen to my music and watch videos on airplanes with it on iPad tablet. I listen to my music on iPhone while on bus to ball games. For this reason, I do not waste money on phones or tablets with lots of over-priced flash storage. I just stream to them. I keep it in my pocket when I need to use it. I can also send its output to FireTV and Chromecast. I can use it when I travel to beam stuff to room TV. I also have wireless hard drives, but they are bigger than one of these flash drives. They also can be connected to home network so the signal is all over the house and works better, too. I am not sure if the app comes in Android version; I think it is just in Apple version. I like my original, and is why I bought a bigger capacity today.
If you have had one for three years, it is an older version, because new models were released over a year and a half ago. The ones I have are the 2nd generation.
The sale is on more than one item; do you need a new SD card for a camera?