Travel-Sized for Convenient Charging of Devices AnywhereCompact form fits comfortably in your purse or backpackIdeal for charging up to 2 smartphones, tablets, e-readers, MP3 players and other handheld mobile devices simultaneouslyWorks with Android, Apple and Windows devicesBuilt-In 12,000mAh Lithium-Ion Battery Charges Without an AC Power OutletCharges at maximum power draw for hours to ensure your devices are ready when you need themDual USB ports provide up to 5V 2.4A of powerAuto-sensing ports adjust amperage to match amperage of connected deviceProtects against short circuits, overvoltage, overcurrent, overcharges and overdischargesEasy to Recharge for the Next Time You Leave Home or OfficeUSB Micro-B port connects to USB charger or computer’s USB-A port to charge internal batteryBuilt-in LEDs indicate at a glance how much battery capacity is left3 ft. USB Micro-B charging cable included