Be careful; its small size can be a blessing and a curse. If not careful, due to its small size, it can be easily lost. Sound Quality Music downloaded on this iPod is heard very well with no problems at all. Sound is crisp and clean. Performance Performs very well, (since it only has to pause/play music, lower and increase the volume, skip and play a previous song, and turn on and off.) Battery Life It is not recommend for the avid listener that likes to listen to their music with the volume all the way up; battery life is drained due to heavy use. Durability Very durable, after a few years, it is still working like the first day. All of the buttons still respond in a quickly manner. Since its design is not unlike the touch screen products that we have today, I expect for my iPod to keep on working in the future. Ease of Use Immensely easy to use. Playing music is straight-forward. Since all of the controls are visible, it is hard to imagine someone can having a hard time trying to figure out how a 2nd Generation iPod Shuffle works.