These are true to size, well crafted and highly recommended! I didnt use it for a phone call, but unless there is a lot of background noise, it should be plenty loud enough for a conversation. If not, my advice would be to turn the sensor off in the app. The structure of the keys with the integrated RGB design creates an absolutely beautiful finish on each and every key with uniform color and no over spill between different colored zones. Ich bereue den Kauf nicht und würde es jederzeit wieder kaufen ! I like that the Velcro is kinda adjustable so you could have it tighter or looser depending on your body and what you like. I took them out of the box, marveled at the comfort/sound quality, then unmarveled when I realized that even at low volume these things leak a ridiculous amount of sound. Picture always wearing shoes and then taking them off and running across a gravel parking lot. Unless youre really longing for an endless parade of f*** in every sentence, debauchery in utter excess, drugs that flow like Niagara. a little big but not uncomfortably big.