This compact retractable USB cable allows you to easily connect your PC to your PDA to quickly charge your battery, sync your data, download contacts. Connect your computer to your E400 or E800 Series and data transfer to 12Mbps Maximum. Two retractable cables combined with 12v cigarette lighter adapter. Pieces include FireWire 30-Pin iPod Connector USB 30-Pin iPod Connector and 12v Charger. This compact spool of high quality cable extends to over 2 inch, just by pulling.