He had expected this question and had put a lot of thought into what he felt should be shared. On the one hand, sharing this information could make it easier for those who might seek to hurt people to know what his abilities were. On the other, he believed that transparency was best in this case. If he lied or hid his abilities, the truth would come out eventually. And when it did, he would lose any trust he might be building up now.
So he had chosen to be honest.
"I'm fast, and I have heat vision. I also have heightened hearing and vision. I can see things at a great distance, and I can also see through most objects."
He listed all of that matter of factly and then waited for the questions that he was sure would come next.