All the devices with in-built mics claim to support hands-free calls. While this is correct, the quality of your calls will greatly rely on the clarity on the microphone. Our workforce associates say the best way to guarantee clarity all through your calls is to look for noise-cancelling mics. https://www.bluetoothspeaker.top/low-price-bluetooth-speaker-led-speakers-wireless-zealot-with-rgb-colorful-effect/