Can you listen to the radio through them?
How do you avoid ear wax on & in your equipment?
Why do people shout when on the phone now instead of talking quietly into a microphone. I don't want to know that you need to manage the customer's expectations about the service delivery issue.
You can listen to whatever you want on them.
The ones i've got are waterproof so can easy wash them after use.
I only use mine for music, i don't really tend to talk on my phone very much at all.