Insignia NS-DV4G 4GB USB 2.0 MP3/MPEG4 Player with 2.2-Inch LCD 4 GB* internal flash storage holds up to 1000 songs, 4,000 photos, 50 audiobooks or 14 movies. Supports MP3 and Audible formats and most image and video formats 2.2" high-resolution LCD color display. Pocket-size design measures just over 0.6" thin and weighs only 2.4 ounces. - High-speed USB 2.0 interface for blazing transfer speeds. - Rechargeable lithium-ion battery provides up to 20 hours of playback time - Supports Audible.com audiobook downloads. - Supports Best Buy Music Service. - PlaysForSure compatible. - Upgradable to future formats and features. - PC and Mac compatible. Features a microSD expansion slot for additional memory capacity (media not included)