Boya BY-BMM400 is a portable and compact system with excellent echo cancellation and noise reduction that can turn any room into a conference room with the ability to record crystal clear and high-quality dialogs or music. At any time, you can turn off the sound, and LED and sound indicators help you quickly navigate the operation of this device. The Boya BY-BMM400 connects seamlessly to a smartphone, tablet, Mac or Windows computer. Recording quality can be controlled through headphones that connect via a 3.5 mm output, and a cable length of 2 m contributes to any working condition. The microphone system is powered by its own lithium battery.