The 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. The clip-on transmitter features a high-quality built-in microphone and is small and light enough to clip to shirts and clothing. Alternatively, you can use the included SR-M1 professional lavalier microphone. No technical knowledge of audio is required to use this device. The Blink500 operates on the interference-free 2.4GHz spectrum and automatically hops to free channels to avoid static noise and audio dropouts. It comes with one transmitter, but you can add a second transmitter (sold separately) to put microphones on two people while using the included dual receiver on your camera.