This lightweight Walkman offers up to 50 hours of MP3 playback on a fully charged battery. Thanks to the drag & drop feature, you can transfer your music collection in no time. With user-friendly controls, you can quickly find the right song, view photos, and turn on the radio. Enjoy music in excellent sound quality at the touch of a button with Clear Audio+. Available with 4, 8, or 16 GB of storage capacity. Easy drag & drop transfer from PC and Mac. Supports playback of PCM, AAC, WMA, and MP3 files. 35 hours of battery life during operation.