Features: Three in one multifunctional receiver, compatibility with mobile phones, tablets, computers, cameras and other devices. Professional grade wireless lavalier microphone, intelligent noise cancelling, real-time monitoring. With one microphone or two microphones, where those with two microphones can be used by two people at the same time. Build in noise cancelling chip, three modes can be freely switched to meet precise sound pickup in any complex situation. Automatic pairing, no need for complex operate, simply insert in the receiver to automatically connect. High performances wireless microphone, 2.4GHz transmission, stable signal, low latency, wireless reception distance up to 20m. The receiver comes with charging port that supports recording while charging the phone. 360 degree omnidirectional sound collection with high sensitivity. Collar clip-on wearing, small size and portable. Specifications: Material: ABS Color: Black Type: with 1pc mic, with 2pcs mic(optional) Size: approx. 13.7x8.4x2.4cm/5.39x3.31x0.94inch Package Includes: 1Pc Adapter with 1pc or 2pcs Wireless Lavalier Microphone(optional) note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.