This Power Case is a multi-functional power bank full back cover bumper case. It is suitable for the stand by power supplies to travel, tourism, long distance business in car and ships, field work or power outage environment. It is luxury, elegant, small, portable. Specifications: 100% Brand New Fine texture, smooth surface Super slim and light design High capacity keep your phone alive. To extend the time for about one-fold LED indicator Plug and Play Cell type polymer lithium battery Input: DC5V-0.8A Output: DC5V-1.0A Max Nominal Capacity: 1500mAh For iPhone 6 & iPhone 6S & iPhone 7; 2000mAh For iPhone 6 Plus & iPhone 6S Plus & iPhone 7 Plus Protection: Short circuit/Over charge 5 colors for choosing: black, silver, gold, rose gold, gray Usage: 1.Put the phone inside the back up battery, then pull out the connector and insert it to the port of charging. 2.At this time, the blue light of back up battery will light up and flash.When the light flash one time, which means there is about 25% power left, two times means about 50% power left and three times means about 75% left and four times means the power is 100%. (Notice: When the cellphone is full, the back up battery will automatically shut off. When you need to recharge, please pull out and insert the connector again.) Charging 1.When the power of back up battery is out off, please insert the charger into the port in the right side of back up battery to charge cellphone and battery. 2.The order of charging is the cellphone comes first, when it is full, then it turns to the battery, at this time, the red light on the back of battery will on and flash, first time mean about 1/3 power left, two times mean 2/3 power left, three times continuously mean about 100% power left. When the battery and cellphone charged full, the green light will last. Package Include: 1x Power Bank Case Cover All in original package, Fast shipping from USA!!