Charlie smirked in appreciation and looked back down at his doll to add a second base coat, trying to look like he was busy rather than because he was invested in the process. He lifted his head, however, when he spotted Luke waving his hand out of the corner of his eye.
Charlie had noticed the implants early on into the conversation but had decided not to say anything unless it was a sensitive subject. He felt a little relieved, though, when Luke pointed them out.
"They, uh, help you hear?" he asked, aiming at a tone of casual interest.