ZEN Nano is a skip-free MP3 player, perfect for anyone new to music downloading and wanting to show off their style. Take shuffle to a whole new level. Not only will ZEN Nano randomly shuffle through all your songs, but the LCD display reveals more than one way to listen to your music. The possibilities are endless! Now you can find the songs you want to hear, listen to your new album, repeat your favorite songs, and more. Listen to hours of continuous music by simply replacing the AAA battery on your morning jog, afternoon lunch, or midnight rendezvous. Use the built-in microphone to capture ideas and save quick reminders when you're out shopping. Plus, record long lectures when you're in important meetings or presentations. ZEN connects wirelessly to your car stereo using an optional Belkin FM Transmitter. AAA battery required Interface - USB 2.0. Compatible with USB 1.1 Playback Formats - MPEG Audio Layer 3 (MP3) and Windows Media Audio (WMA) with DRM and Audible Signal to Noise Ratio - up to 90dB Frequency Response - 20Hz to 20kHz Harmonic Response Output - less than 0.1% Headphone Output - 1/8 stereo minijack Dimensions(WxHxD) - 1.32 x 2.58 x 0.51 Weight - 2.2oz with battery