‣ PowerCore Select 20000: Ultra high-capacity portable battery. ‣ Features 2 USB-A ports for simultaneous device charging. ‣ Weighing less than a pound, it's designed for on-the-go use. ‣ Provides up to 46 hours of extra call time for your phone. ‣ Compatible with a wide range of USB-charged devices, including iPhone models (with Lightning cable) and Android smartphones/tablets.