The Blackberry Double Talk Charger combines a vehicle power charger and an AC charger in one convenient pack. To use Blackberry Double Talk Charger in a vehicle, fold out the vehicle power charger adapter and plug it into your vehicle power outlet. The AC charger is just as easy. Simply fold out the AC charger prongs and plug it into a wall outlet. The vehicle power charger is compatible with most domestic and foreign vehicles with 12-volt outlets. This device rapid charges your battery to approximately 85 percent faster capacity than standard chargers. This charger is lightweight and compact, weighing only 4 oz or 110 grams.