Features: 1) Compatible with iPods with dock connector only, the iPod dock connector to FireWire and USB2.0 cable offers Windows PC customers up to 480Mbps data transfer for quickly loading an entire music library on iPod, connect the FireWire cable up to the iPod power adapter to charge while syncing 2) Retractable earphone for iPod, MP3 and PDA 3) FM transmitter for iPod and MP3 4) AC charger with USB interface and LED indicator 5) Input: 90-240V 6) Output: 5V, 500mA