In the feeling I saw, it was a solid product. There is a reasonable weight when bundled when not in use, but a secure hooked binding band is enclosed and it is easy to use. It is currently in use outdoors, but there seems to be no particular problem.
Although there are 2P, 3 mouths are attached. Is not that what it means? Water seems to come in from a place where the cap is not loosely connected, but it is good as it is unusual even if there is a cap. I tried charging the phone at the same time but it did not do.