Charge up no matter where your day takes you with the Junction Power Bank. This handy item provides the power of a 4,000 mAh Li-Polymer grade A internal battery and a PU protective case. The 5V/1A USB allows you to charge your smartphone at the same rate as a wall outlet. The USB to Micro USB connecting cable allows you to charge the backup or to be used to charge devices that require a Micro-USB input such as Android smartphones from Samsung, Motorola HTC, Nokia and others.