Here is the current iPod Nano (Generation 4), along with the previous version (Generation 3). These two pieces of technology made history with generation 3 being able to hold up to 8GB of files, play music, play videos, view photos and play games. The 4th Generation, on top of that, became the thinnest mp3 player in the world, having a capacity of up to 16GB and holding an inbuilt accelerometer.