Sony MP3 players are designed with long-lasting battery life and lots of storage for everything from all-time classics to brand new hits. This lightweight Walkman® can play MP3s for up to 50 hours between charges, and with a simple drag and drop interface it's easy to load up all your music. The easy-to-use controls let you find the right song, view photos and tune the radio in seconds. Digital music player with USB connection, 4GB/8GB/16GB of memory, side volume and hold controls, and 50 hours of battery life.