Simply carry an extra handy and light travel charger that powers your phone anytime anywhere. Intelligent IC chip inside recognizes a full battery and automatically switches to a saver mode to prevent overcharging and short circuit. The innovative travel charger automatically adjusts to all voltages and frequencies in the U.S., Europe, and Asia. Phone can still be used during charging. Compact, light weight, portable, stylish, easy to store, perfect accessory for traveling. Best replacement for the original Nokia AC-3U travel charger.