ROMOSS Sense 6 LED 20000mAh Portable Charger, 2-Port Ultra 20000mAh High Capacity External Battery Power Bank with 3.1A Output High Speed Charge for iPhone, Samsung Galaxy and More

DUAL-PORT CHARGING: Dual USB output (5V/1A and 5V/2.1A) enables to charge smartphone and tablet at the same time. Power conversion rate can reach up to 85%.
SMART CHARGING TECHNOLOGY: Automatically detects the needed current of your devices, and then delivers the fastest and safest charging current for your devices.
INCREDIBLE CAPACITY: 20000mAh capacity can charge your iPhone 6s 9.9 times, Galaxy S7 4.7 times or an iPad Mini 2.8 times before you need to recharge the power bank. The implicit LED indicator presents precise balanced battery percentage.
ASTONISHING RECHARGE SPEED: 5V 2.1A input and build-in fast self-charging IC, 50% faster than the common external battery.
WHAT YOU GET: ROMOSS 20000mAh power bank, Micro USB cable, user guide, 12 months warranty and 24 hours friendly customer service.