The TYLT Smart Charger 1x 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 3350mAh battery will recharge your phone at least 1x while the 2.4A output will rapidly charge your devices.