Incredibly lightweight, ultracompact and easy-to-use wireless microphone system for DSLR, Mirrorless and Video cameras, or mobile devices that delivers detailed, broadcast-quality sound Clip-On Transmitter has a great sounding built-in mic and it's small and light enough to clip to shirts and clothing, or you can use the included SR-M1 Professional Lavalier Microphone No technical knowledge of audio is required to use. Operates on the interference-free 2.4GHz spectrum and automatically hops to free channels to avoid static noise and audio dropouts Belt clip on the receiver acts as a camera-shoe mount for easy attachment, two output cables are included, TRS for cameras and TRRS for smartphones or tablets Dual-Channel Receiver can handle mics from two separate people by adding a second Blink 500 TX transmitter (sold separately)