Just as your BlackBerry® device helps you successfully multi-task, the combination data synchronization and charging cable helps you conduct two vital functions at once. The USB cable that allows you to sync data between your PC and your BlackBerry device also recharges it. Pick up one cable for the office and another for home so you'll never be without the power your device needs. Also, like all BlackBerry chargers, the USB Charging & Datasync Cable is designed to provide consistent, reliable power by ensuring a supply of constant current and voltage are delivered to the device, to charge your device safely and rapidly, and help preserve the life of your battery.