The Sony Walkman NWZ-S544 Digital Media Player provides hours of entertainment. The built-in rechargeable lithium-ion battery provides long hours of listening to your choice of audio, and has USB-based charging. Load mp3, mp4, wmv files, and more via USB connection to personalize your playlist. Manage your digital library with the easy drag-and-drop and easy-to-use GUI navigation capabilities. The 2.4-inch LCD screen display lets you see what's playing or provides a rich video viewing with a resolution of 240x320 pixels. It has clear stereo and clear base audio technology for clearer, deeper sound. The FM Tuner allows you to listen to your favorite radio stations. It has a Voice and FM Recording function that allows you to capture audio. The dual listening capabilities include a stereo mini-jack for headphones or earbuds, and built-in speakers let you listen to music without being wired to the device. The built-in Alarm Clock with Sleep Timer adds a nice feature. This Sony Walkman model is 8GB and comes in black.