Round out your digital audio experience with the Sony 1 GB Flash Digital Music Player NW-E107SILVER. Featuring 1 GB of built-in Flash memory and up to 70 hours of continuous playback on just one AAA battery, the NW-E107 plays back your MP3 and ATRAC3®/ATRAC3plus™ audio files, and supports WMA and WAV files, too. The easy toggle navigation lets you navigate through tracks, albums and settings by using the face of the player to make selections. Weighing under one ounce and using no moving parts, the NW-E107 goes anywhere you do without skipping a beat. Description 1GB Built-In Memory Up to 70 Hours Battery Life with 1 "AAA" Battery. Plays Back MP3/ATRAC3®/ATRAC3plus™ Audio Formats --- For customers who already have extensive music libraries, use the included software and hardware to store and play back their collection of MP3s. For the customer who is just getting into digital music and downloading, Sony's ATRAC® format provides higher sound quality with smaller sizes than many competing formats. This enables the user to store more music and have longer listening times. Backlit LCD --- Provides easy viewing of song data and much more. Supports WMA, WAV Audio Formats --- The Network Walkman player plays back ATRAC3®, ATRAC3plus™ format and MP3 files, and supports WMA and WAV Ultra Compact Design --- Weighs under one ounce Easy Toggle Navigation --- Navigate through tracks, albums and settings by using the large face of the product and "rock" it back and forth to make a selection. Transfer Personal Downloaded Music and CD Recordings --- between your CDs and your PC, creating your own music mixes for on-the-go enjoyment. Skip Proof Design-No Moving Parts --- for uninterrupted playback even while carrying the Network Walkman player during active uses. Connects to USB Port for High Speed Data Transfer --- After mixes have been created in the jukebox, they are easily transferred at high speed to the device. Multi Language Display --- Displays encoded text that can include the artist name, disc name, and/or track name. Music Management Software Supplied --- Import, manage and easily transfer your digital music collections with the supplied music management software Shipping Weight: 3 lb