Archos 104 4GB MP3 and WMA Digital Music Player and Photo Viewer, Black (500846) Lightweight digital music player and photo viewer with easy-to-use, intuitive controls and a bright 1.5-inch OLED display screen 4 gigabyte hard disk provides you with up to 2,000 songs and up to 40,000 pictures of storage Compatible with MP3, WAV, WMA and protected WMA music files, and JPEG picture files Uses high-speed USB 2.0 for both file transfers and charging, and includes a rechargeable Lithium-Ion battery with up to 13 hours battery life Includes a line-out jack for playing your music through a stereo, weighs only 2.8 ounces, and measures approximately 1.7 x 3.6 x 0.5 inches (W x H x D)