Tripp Lite Portable 2-Port USB Battery Charger Mobile Power Bank 12k mAh - For Smartphone, Tablet PC, MP3 Player, Bluetooth Speaker, Headset, Headphone, Handheld Gaming Console - 12000 mAh - 2 A - 5 V DC Output - Black

LEDs indicate remaining battery capacity Charges devices at maximum output up to 4 hr. Fits comfortably in your purse, backpack or laptop bag Dual USB ports provide up to 5V, 1A and 5V, 2A of power Includes USB Micro-B charging cable