Home / Live Sound / Microphones / Boya BY-BMM400 Conference Microphone with Speaker Boya BY-BMM400 Conference Microphone with SpeakerGHS2,290.17 A battery-powered microphone/speaker that connects to a smartphone or tablet, or a Mac/Windows computer and turns any room into a phone- or video-conference venue. Out of stock SKU: BYBMM400 Categories: Accessories, Microphones Tags: bmm400, boya, conference mic Product ID: 6157