I've been using the CA-100 charger for a while now, and am happy to say that so far I haven't encountered the other reviewer's durability issue. This little cable has a regular USB plug on one end and a 2 mm plug on the other, which fits models such as the E71 and E63. A plastic cap hooked on to the cable keeps dirt out of the USB end when it's not in use, and also avoids tangling of cables (a problem if your backpack is a black hole!). It's a great solution for when I travel with my laptop, since I don't need to take along the wall charger. The CA-100 weighs next to nothing and takes up no space. It's more suitable for laptops and USB hubs, since the cable is only 8 inches long: there's no practical way to plug it into a back desktop USB port, and even into a front one the phone would be left dangling. This is evidently made for laptops, and for this purpose it works very well.