Polaroid PMP120-4 is a versatile multimedia player that allows you to enjoy your favorite content on the go. With its 4GB of storage, you can store and play a variety of music, videos, and photos. The device features a 1.8-inch LCD screen, making it easy to view your content. You can also use the built-in speaker to listen to your music or watch your videos. The Polaroid PMP120-4 also has a built-in microphone, so you can record voice memos or use it as a dictaphone. Additionally, the device has a USB port, so you can easily transfer files to and from your computer.