Alogic Roam 21000 mAh Power Bank - For Notebook, Smartwatch, iPhone, AirPods Pro, iPad, MacBook Air, DSLR Camera, Tablet PC, Smartphone, Earbud - 21000 mAh - 3 A, 5 A - 5 V DC, 9 V DC, 12 V DC, 15 V DC, 20 V DC Output - 5 V, 9 V, 12 V, 15 V, 20 V Input - 2 x USB: