Motorola P790, Black Motorola P790. Product color: Black https://www.cnet.com/reviews/motorola-p790-portable-power-charger-review/ As long as you have a compatible phone, the Motorola P790 portable charger is a convenient way to charge up a dying cell phone without the need for an electrical outlet. The Motorola P790 portable charger is compact and lightweight, dead simple to use, and adds hours to a phones battery life. The Motorola P790 only works with phones that have a miniUSB port, and it needs an electrical outlet to charge. As long as you have a compatible phone, the Motorola P790 portable charger is a convenient way to charge up a dying cell phone without the need for an electrical outlet.