Instruct: Classify Amazon reviews into positive or negative sentiment
Query: too expensive for such poor durability

Bottom line: this is supposed to be a "portable" product; it's not. The wires are simply too delicate to endure. Plus, as another reviewer mentioned, the carrying case is designed to practically guarantee failure. It's like storing a paperclip in a container that forces you to flex it back & forth a bit each time you store it.To me, an expensive product that is, in fact, designed to fail & designed to produce a follow-up purchase is not acceptable.So, if you plan to use them on the go, don't expect them to last more than several months.