Sendy 5200mAh High Capacity Portable Power Backup External Battery Charger with built-in Flashlight High Capacity, 5200mAh; 2-3 full charges or add 22 hours talk time to your iPhone 4S / 4G / 3GS; 1-2 charges for Samsung Galaxy S3, 200 hours + audio playback, or 200% - 300% to the battery life of most mobile phones Slim, Sleek, Compact, portable and stylish Design. Convenient to carry in your pocket or purse. LED indicators reveal the battery level. Work as flashlight for 250 hours. Double press the power button to turn it on/off. 1 Year Warranty.