The TYLT Smart Charger 3x is a small and portable 2 in 1 charger. When plugged in the wall, it acts as your standard wall charger. When removed from the wall, it acts as your portable power bank. Get the best of both worlds combined into one small product. The 6700mAh battery will recharge your phone up to 3x and the built-in charging arm means you don’t need any extra charging cables. The 3x also contains and additional USB port to charge two devices simultaneously. Choose either a Lightning charging arm (2.4A Rapid Charge output) or a Micro-USB arm with QuickCharge 3.0 Technology.