This small compact object that fits in the pocket or handbag, plugs into the cigarette lighter in the car where it is stable.
Just plug in (ignition on) to choose two devices via two USB cables charging and voila.
(When charger is connected a blue light comes on inside: she is very discreet in daylight but can easily locate the two USB ports night).
For my part I and tentatively charged my smartphone and my kindle, simultaneously: at first glance the charging time is the same, I'll check over time and will modify my review accordingly.
