iPod is Apple's best seller portable multimedia device. An iPod can be used to view and store different variants of audio and video formats. It is also useful to view various picture file formats. iPod has an option where users can download songs online and play games on the device as well. It also supports Bluetooth telephony which allows users to listen to their favorite songswirelessly using a Bluetooth headset. Bluetooth telephony, however, cannot be used to transfer data wirelessly. For this, one has to connect it to a PC and then transfer the file.