Power Bank,VINSIC 12000mAh Power Bank, 5V 4A 3 USB Ports with Smart USB Bamboo External Mobile Battery Charger Pack for iPhone, iPad, Samsung Devices, Cell Phones, Tablet PCs. Power Bank, it is made of top-grade chip, environment friendly bamboo and high quality batteries, supports over-charged, over-discharged, over-voltage, over-current and short circuit protection, safe and reliable. Easy-to-read screen: built in soft light LED screen, it will show the remaining power capacity in digital when you shake the power bank lightly. High capacity and efficiency: 12000mAh powerful capacity and built-in 3 output USB ports, you can charge three devices simultaneously. Unique appearance: specially designed by the R&D team, it is durable, compact, lightweight and stylish, convenient to put it in your bag and use it anytime, anywhere for long-term. Smart identification: totally 5V 4A output USB ports with the Smart Power Technology, they can intelligently communicates with connected devices to maximize both compatibility and charging speed, helps you to charge your devices with full speed.