The last sort of Bluetooth microphone would be the stereo microphone that incorporates two inbuilt microphones picking up sound from the left and correct directions. For all twenty five speakers we tested, the average battery life was slightly under seventeen hours. The Sony Ult Field 7 wins the title https://www.bluetoothspeaker.top/best-quality-boombox-music-god-of-war-3-generation-wireless-bluetooth-speaker-original/