?20000mAh HIGH CAPACITY AND COMPACT SIZE BACKUP BATTERY: KUNSTWORKER is smaller than iPhone 6 Plus, Our cell phone battery charger is powerful enough to charge iPhone 6 almost 8 times,iPhone 7 almost 6 times, Galaxy S7almost 5 times, iPad Air almost 2 times. ?BUILT-IN FIGURE LED DISPLAY: Unique smart digital display technology shows remaining power in digital format. You always know when the usb battery charger is fully charged and how much power it’s available. ?BUILT-IN LED FLASHLIGHT: The power bank has 2 built in LED flash lights.KUNSTWORKER for dark or low-light environments. Our power charger is useful especially you are in a pinch and need a small light during a blackout. ?THREE OUTPUT PORTS: One 2.1A Output Port,Two 1A Output Ports ,detects your device automatically to deliver its fastest possible charge. the capacity to charge up to 3 devices multiple times is it’s strength.3 USB ports are compatible with almost all smart devices with an input of DC 5V. ?NINE SECURITY PROTECTION MODES: To prevent excessive charging, excessive discharge, the voltage is too high, the current is too large, too much power, high temperature, circuit short circuit, reverse charge, battery instability.