Features: Mini Lavalier Built-in Mic System: The BoomX-U system supports external lavalier microphone with clip and internal microphone 2 modes for recording, body-pack design unit is easy to mount and wear with back clip. More Controllable: LCF(low cut filter) for clear recording, 16 levels adjustable gain control, muting function, real-time visual power and 3.5mm dynamic audio monitoring, all these functions built a powerful system to use. UHF Stable Transmission: The transmitter and receiver can automatically scan and quick repair via IR transmitting, transmission distance can reach up to Max.120m/394ft while the connection is still fast and stable. Wide External Compatibility: Comes with 3.5mm TRS to TRS and TRRS for smartphone, laptop and DSLR, mirrorless camera connection, 3.5mm to XLR cable makes audio output accessible, greater compatibility in one set. Professional Broadcast Level: Outstanding recording quality and portable system for DSLR, camcorder and computer, satisfy different needs for occasions like video-making, interview, broadcast and more.