The last kind of Bluetooth microphone will be the stereo microphone that incorporates two inbuilt microphones picking up sound from the remaining and ideal directions. For all 25 speakers we tested, the average battery life was a little under 17 hours. The Sony Ult Area 7 wins the title https://www.bluetoothspeaker.top/hot-selling-products-portable-wireless-bluetooth-speaker-multifunctional-speakers-with-rgb-lights/