Black Lenmar Pulsar 2400mAh Power Case for Samsung Galaxy S III gives more power and a Slim Look for your Samsung Galaxy S III; Light-weight, strong, and stylish battery case; Built-in 2400mAh battery, provides at least a full charge and more; Charger turns off automatically; Holes in the case allow for proper use of headphones, camera, flash, and charging; Charge and sync via Micro USB; USB to micro-USB included.