I had an earlier version of these cables, virtually identical but red. Bought these black cables because the red version did what a good charging cable should do. Unfortunately we lost a red. The second red cord was quite dented from the new vacuum it sucked up! So this time I chose the black ones to change the tempo because the red ones worked very satisfactorily. The delivery exceeded all expectations and arrived within a few days of ordering, even before the phone needed to be charged. So, we use a week and were not disappointed.