Bought several to install new head units in all my cars. I first bought a cheap adapter and realized at some point its either going to snap off while plugged in, or loosen the connection and ruin whatever component Im plugging it into. Great microphone. It fit, it works and my headphones dont slide off my head. Si te ha parecido útil mi opinión no olvides darle al botón de útil más abajo porfa. These were no where near the size I ordered. I like how compact they fold up so thry take up minimal space in a bag when we are traveling. Hooks dont stick so used something else but racks are good. It also slips off heel of foot when walking. He suffers from all over feet pain and I have not heard him complain once since he started wearing these.